Heat exchanger structure

Each heat exchanger has its specific application scenarios, advantages and disadvantages. When selecting, you need to consider the properties of the fluid, temperature difference, pressure level, and cleaning and maintenance needs.

There are various types of heat exchanger structures, each with its own unique design and purpose. The following are the structural features of several common heat exchangers:

Plate heat exchanger:
It consists of heat transfer plates and frames.
There are four corner holes on the heat transfer plate for the circulation of two liquids.
The plates are installed in a frame with fixed and movable plates on the sides and clamped with clamping bolts.
The corrugations of the plates are herringbone-shaped, and adjacent plates have herringbone grooves in opposite directions, forming contact points to promote turbulence and improve heat transfer efficiency.

Shell and tube heat exchanger (tube and tube heat exchanger):
A partition-type heat exchanger with the wall surface of the tube bundle enclosed in the shell as the heat transfer surface.
It has simple structure and reliable operation, and is suitable for high temperature and high pressure environments.
It can be divided into fixed tube plate type, floating head type, U-shaped tube type and other types.
The fixed tube plate type has tube plates at both ends integrated with the shell, which is suitable for situations where the temperature difference is not large and the shell side does not require mechanical cleaning.

The floating head type tube sheet at one end can float freely, which is convenient for mechanical cleaning and maintenance, but the structure is more complicated.
Each heat exchange tube of the U-shaped tube type is bent into a U shape, and both ends are fixed on the upper and lower areas of the same tube plate.

Casing heat exchanger:
Hot fluid is introduced from the upper part, and cold fluid is introduced from the lower part.
The inner pipe and the outer pipe are connected by welding or flange, and the inner pipe and the U-shaped elbow are mostly connected by flange.
Each heat exchanger has its specific application scenarios, advantages and disadvantages. When selecting, you need to consider the properties of the fluid, temperature difference, pressure level, and cleaning and maintenance needs.