A fundamental concept of thermodynamics, heat transfer refers to a thermal exchange between two bodies, whether liquids, solids or gases, in order to obtain a thermal equilibrium between them through their molecular evolution.
It is therefore a process of internal energy exchange.
Heat transfers are carried out by conduction, convection or radiation and allow the heating or cooling of a product mixture in a tank. The level of heat exchange depends on different parameters such as the stirring speed or the structure of the mobiles used for the agitator equipment.
Heat transfer can only take place from the hot source to the cold source and is irreversible.
Thermal conduction is adapted to fluids and solids, the transfer of the kinetic energy of the molecules being done without matter exchange, contrary to convection where the exchange of matter is carried out between leaks, liquids and gases by a movement of the particles.
In the industrial fields of agitation, thermal exchanges are mainly used for dissolutions and homogenizations, or to create a chemical reaction and/or a specific physico-chemical transformation.
The chemical, pharmaceutical, food or cosmetics industries produce, use or transform complex fluids on a daily basis via the heat transfer process. More generally, these are fluids with high or very high viscosity, but also with intermediate viscosity for products with simple behaviour or containing solid particles.
Heat transfer operations are carried out in tanks with stirrers equipped with mobiles such as turbines, propellers or anchors, which often prove to be the most suitable for this process.
Thus, Agitec offers a whole range of anchors such as the flat and inclined flat anchor for products of intermediate viscosity, the tubular anchor for complex mixtures with high viscosity, up to helical anchors or with scrapers for the homogenization of mixtures with very high viscosity.