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The dynamic scraped surface heat exchanger (DSSHE) is a type of heat exchanger used to remove or add heat to fluids, mainly foodstuffs, but also other industrial products. They have been designed to address specific problems that impede efficient heat transfer.
Another type of heat exchanger is called "(dynamic) scraped surface heat exchanger". This is mainly used for heating or cooling with high-viscosity products, crystallization processes, evaporation and high-fouling applications. Long running times are achieved due to the continuous scraping of the surface, thus avoiding fouling and achieving a ...
Concentric tube heat exchanger; Condenser (heat transfer) ... CuproBraze; D. Downhole heat exchanger; Dynamic scraped surface heat exchanger; F. Flue-gas condensation ...
The heat pipe is mainly used in space, process or air heating, in waste heat from a process is being transferred to the surrounding due to its transfer mechanism. Thermal wheel or rotary heat exchanger: consists of a circular honeycomb matrix of heat absorbing material, which is slowly rotated within the supply and exhaust air streams of an air ...
Indirect forms of heat transfer include: plate heat exchangers, tubular heat exchangers, or scraped-surface heat exchangers. [7] Plate heat exchangers are mostly used because they are inexpensive and allow for easy changes during production. Tubular and scraped-surface can heat viscous food with particulates or high pulp content with minimal ...
The idea is to use a well-polished evaporator surface (dynamic scraped surface heat exchanger) and appropriate mechanisms to prevent tubing from adhering to the ice embryos, and to prevent growth and a thickening of the ice on the inside cooling surface. A whip rod, screw, or shaft with metallic or plastic wipers is usually used as a mechanism ...
In indirect systems, the product is heated by a solid heat exchanger similar to those used for pasteurization. However, as higher temperatures are applied, it is necessary to employ higher pressures in order to prevent boiling. [14] There are three types of exchangers in use: [15] Plate exchangers, Tubular exchangers; Scraped-surface exchangers.
Temperature vs. heat load diagram of hot stream (H 2 O entering at 20 bar, 473.15 K, and 4 kg/s) and cold stream (R-11 entering at 18 bar, 303.15 K, and 5 kg/s) in a counter-flow heat exchanger. "Pinch" is the point of closest approach between the hot and cold streams in the T vs. H diagram.