Every winter, many friends in cold regions will feel the warmth brought by heating. Heating is much better than electric heating, because the heat it brings is not so dry. Heating by heating is the main way of heating in winter in many areas. The heating pipe used for heating is also a common one in industry. Generally, the widely used heating pipe is the tube heat exchanger. The following is an introduction to the relevant knowledge, advantages and disadvantages of tube heat exchangers.
Tubular heat exchangers are most used in daily life. It is also called shell-and-tube or tube heat exchanger, which is a typical partition wall heat exchanger. This type of heat exchanger generally consists of four parts: shell, tube bundle, tube sheet and head. The shell is mostly round. There are multiple parallel tube bundles inside, and the two ends of the tube bundle are fixed on the tube plate. This forms a closed whole.
The structure of the tube heat exchanger is different. According to this, it can be divided into tube sheet heat exchanger and floating head heat exchanger. There are also U-tube heat exchangers, stuffed box heat exchangers, kettle reboilers, etc. Their composition and structure are different, with different advantages and disadvantages. The following is an analysis of the advantages and disadvantages for everyone.
1. Fixed tube-plate heat exchanger.
Advantages: simple structure and convenient producing. In the case of the same tube bundle, the inner diameter of the shell is the smallest. It is more convenient to split the tube process.
Disadvantages: The shell side cannot be mechanically cleaned. The shell side inspection is difficult. When there is no temperature difference compensation element between the shell and the pipe, a large temperature difference stress will be generated. That is, when the temperature difference is large, compensation elements such as expansion joints or bellows are required. This can reduce the temperature difference stress.
2. Floating head heat exchanger
Advantages: no temperature stress. The floating head is detachable, and the tube bundle is easy to withdraw or insert. This facilitates maintenance and cleaning.
Disadvantages: The structure is more complicated. It is difficult to check the sealing condition of the floating head cover during operation.
3. U-tube heat exchanger
Advantages: simple structure. The cost is low, and it does not produce thermal stress. Its outer tube is easy to clean.
Disadvantages: Cleaning inside the tube is difficult because the tube is U-shaped. It is difficult to replace the heat exchange tubes inside the tube bundle. The low natural frequency of the tube bundle is easy to arouse vibration.
4. Filler box heat exchanger
Advantages: The stuffing box structure is simpler than the floating head. It is easy to maintain and clean. No temperature difference stress, with the advantages of floating head heat exchanger. It eliminates the shortcomings of fixed tube plate heat exchangers.
Disadvantages: poor sealing performance. It is not suitable for volatile, flammable, explosive and toxic media.
The above is the relevant knowledge, advantages and disadvantages of tube heat exchangers for everyone. I hope the introduction of the advantages and shortcomings of the above tubular heat exchanger will provide help for everyone's choice. The tube heat exchanger is actually a kind of high efficiency and energy saving equipment. Its exterior material is stainless steel, and the heat exchange rate is extremely fast. Therefore, it is widely used in daily life.
