Scraped Surface Heat Exchangers

In scraped-surface heat exchangers, the product enters the cylinder at the bottom and flows upward. The heating or cooling medium travels in a counter-current flow through a narrow channel.

Rotating blades continuously remove product from the cylinder wall to ensure uniform heat transfer to the product. The product enters the cylinder in a corkscrew pattern in the same direction as the rotating part. This preserves product quality by providing a larger flow area, gentler product handling and reduced pressure drop across the inlet. The food product finally leaves the cylinder at the top. Ideal for products that are viscous, sticky or contain particulates.