The devices are designed to cool viscous products (with a viscosity up to 2x10¯m2 / s); oil refining, petrochemical and related industries. The device consists of three horizontally arranged pipe sections, made up of finned bimetallic pipes. The structural feature of the apparatus is a reduced coefficient of finning φ = 7.8 with a diameter of the supporting tube of 38 mm. The sections are mounted on a metal structure. The drive of the fan wheel is placed on a separate frame. The fan wheel, rotating in the cavity of the collector, drives the air through the annulus, cooling the product.