The objective of all cryogenic tunnel freezers is to quickly freeze or cool products in an efficient manner using a cryogenic liquid. Suited for processing large quantities of products in a small footprint, cryogenic tunnel freezers can increase product yield compared to alternative technologies. Cryogenic tunnel freezers also result in less product dehydration while retaining product textures.

Although these are significant advantages over mechanical freezing systems, the most important concern for many food processors remains product freezing cost. It is critical, therefore, to design a cryogenic tunnel freezer to operate as efficiently as possible while incorporating the processor’s layout and required production capacities. In its basic form, a cryogenic tunnel freezer consists of four primary parts: