A tunnel freezer is a long cryogenic tunnel that is used to cool food products quickly. This allows manufacturers to increase production and sales without hindering the quality of their products. The cooling process of these systems is typically done with liquid nitrogen or carbon dioxide. Each of these refrigerants has its own unique properties that can be beneficial in certain situations, but they both serve to quickly cool the product and prevent microbial growth.
This type of freezer is usually made of stainless steel and has a number of different components that are connected together by conveyor belts. There is also an insulated box that keeps the products and cold gases at the right temperature. The product is transported through the freezer on a conveyor belt and then injected with the cryogenic refrigerant. A ventilator is then used to ensure the cold air reaches all parts of the product. Once the product is fully cooled, it is ready to be packaged.
Typically, a tunnel freezer is cooled with either carbon dioxide or liquid nitrogen. Both of these types of refrigerants are extremely efficient and provide high-speed cooling without impacting the taste or smell of the product. Liquid nitrogen is preferred for a lot of applications because it does not impair microbial growth. However, it is not suitable for all types of products. For these, a tunnel freezer that uses carbon dioxide is a better choice.
Another feature of a tunnel freezer is the ability to use different types of refrigerants. This gives companies the flexibility to choose the best one for their specific needs. For example, they may want to switch between nitrogen and carbon dioxide at some point in the future. The change can be easily implemented because of the simple design of these systems.
These freezers are available in a wide range of sizes and configurations, making them easy to adapt for various projects. They are also highly reliable and require little maintenance. This makes them a good option for businesses that need to get up and running quickly.
There are many factors that need to be taken into account when selecting a tunnel freezer, including the size of the conveyor belt, the amount of space needed for storage and the amount of product that can be frozen per hour. In addition, a company should consider the aesthetics of their tunnel freezer, as it will be in full view of customers and could have an effect on their perception of the brand.
This type of freezer is also known as a quick-freezing machine, and is used for the fast freezing of meat, seafood, vegetables, fruits, bakery products, noodles, pasta and other foods. The main advantage of the quick-freezing machine is that it can achieve high freezing speed with low power consumption. The product can be frozen as it is being conveyed, and the process can be completed in less than half the time compared to traditional freezers.