Scraped Surface Exchangers

When used to cool or heat a product of high viscosity. A typical case is the cooled dried lecithin to the output of an agitated thin film evaporator in cooling and other confectionery, jams and jellies. 

Are of reduced diameter, between 100 and 250 mm and lengths of 1 to 2 m. Having a shaft provided with scrapers that are supported by the reaction surface of the product to rotate, thus can eliminate fouling problems and greatly increase the heat transfer coefficient