A heat exchanger is a heat transfer device that enables heat exchange between two or more process fluids.
Widely used in industrial and home applications. It can be divided into many types in construction, including double casing
Type, shell tube type, coil type, plate type, etc. Functionally divided into heat exchangers, coolers, condensation
, heaters, evaporators, etc. In the heat transfer feature to distinguish can be divided into reply, regenerative and direct
Contact type.