A refrigerating chamber or cold room is a warehouse in which a specific temperature is artificially generated. It is generally designed for storing products in an environment below the outside temperature. Products that need refrigeration include fruits, vegetables, seafood, meat, flowers.The term Cold room, as generic as the name may sound, refers to a specially built room, chamber or an enclosure that is well-insulated or lagged so as to prevent direct thermal flow out of the room.

Blast freezing is the process of pushing very cold air over a food product in order to freeze it as quickly as possible. There are different types of blast freezers in which the blast freezing process is a little different. Such as: Single-load blast freezers — that freeze batches of products at a time.Blast cooling, also called 'blast chilling' or 'blast freezing', is when you cool a product very quickly to a temperature that makes it relatively safe from microbial growth. Blast chillers are usually a self-contained, cabinet-style system or a space lined with insulated panels and fitted with refrigeration equipment.