In fact, the heat exchanger we are talking about here refers to the partitioned heat exchanger. The partitioned heat exchanger is a heat exchanger in which cold and hot fluids are separated by a wall to exchange heat. The two media are not in contact at the same time, and the heat passes through
The wall spreads, and the dividing wall heat exchanger can be divided into the following types
1. Double-pipe heat exchanger
The double-pipe heat exchanger is a concentric sleeve made of pipes with different diameters. One fluid runs inside the pipe and one fluid runs through the annular gap. The advantage of this type of heat exchanger is simple structure, high pressure and high temperature, and application
Convenience, the disadvantage is that the flow resistance is too large and the metal consumption is large, so this type of heat exchanger is suitable for scenarios where the heat exchange surface is small, the heat transfer is not large, or the fluid flow is small.
2. Tubular heat exchanger
Tube-and-tube heat exchanger, also known as shell-and-tube heat exchanger, is the most classic partition type heat exchanger. It is mainly composed of shell, tube bundle, tube sheet and head, etc. The shell is mostly elliptical with internal
In parallel tube bundles, inside the heat exchanger, one fluid flows in the tube, which is called the tube side, and the other flows outside the tube, which is called the shell side. However, the hot gas of this type of tube has a low heat transfer coefficient and a heavy structure.
Disadvantages such as large area.
3. Cross flow heat exchanger
Cross-flow heat exchanger is also a form of partition heat exchanger. It is mostly used in the case of liquid and gas heat exchangers. When air is used as the cooling medium, it is also called radiator. According to the structure of the heat exchange surface, it is also called
It is tube bundle type, tube belt type, and plate fin type. The tube bundle has fin type. The evaporator and condenser in household air conditioner mostly use this type of heat exchanger. The tube bundle is in the form of light tube.
Superheaters and economizers are mostly used in this type.
4. Plate heat exchanger
The plate heat exchanger is mainly a high-efficiency heat exchanger for liquid and liquid heat exchange. It is composed of several corrugated metal heat transfer fins formed by pressing the plates. The adjacent plates are separated by sealing gaskets to transfer heat.
As a key element, there are many types of plates, which can realize various complex types of heat exchange. The plate heat exchanger has a small footprint, large heat exchange area, compact structure, low resistance, and low metal consumption.
It has many advantages such as easy disassembly and cleaning, and it has been widely used in food, heating, medicine, chemical and other important industries related to people's livelihood.
5. Plate and shell heat exchanger
The plate and shell heat exchanger is the latest product developed based on the design concept of the plate heat exchanger and combined with the shell and tube heat exchanger. Compared with the plate heat exchanger design, the plate and shell heat exchanger eliminates the rubber sealing strip.
, The whole adopts a fully welded structure, which can withstand high temperature and high pressure working environment, and has stable and good heat exchange performance in this environment. However, the welding process of plate and shell heat exchangers is complicated. When purchasing such heat exchangers, you must
Choose a strong manufacturer.
Qingdao Ripter specializes in the production of heat exchanger equipment, with a wealth of plate heat exchanger plate types, whether it is the mainstream Alfa Laval type, Saunders type or GEA type, or relatively rare types such as Amperev and Transtech.
Can choose the most suitable plate type according to your working conditions.
For plate and shell heat exchangers, Qingdao RPT has many years of experience in designing and processing, and it has been running without failure for more than five years.
The heat exchangers designed and produced are sold overseas, and have been well received by a wide range of users in China. They also have an excellent reputation in foreign user groups. For heat exchangers, we are more professional!