Heat Exchanger for Industrial Dryer

Industrial dryers usually require a heat source to heat the air in order to remove the humidity from the material. In order to achieve this, the dryer needs an efficient heat exchanger to transfer the heat. One common type of heat exchanger is the finned tube heat exchanger.

A finned tube heat exchanger in an industrial dryer works on essentially the same principle as a finned tube heat exchanger in a commercial dryer, the difference being in the fluid used and the environment in which it is applied.

In an industrial dryer, gas, hot oil or steam is usually used as the fluid inside the tube. The fluid outside the tube is the air that needs to be heated. As the gas or hot oil flows through the finned tube, it transfers heat to the fins, which in turn transfer it to the fluid outside the tube, thus heating the air and allowing it to flow through the drying chamber and complete the drying process.

It is important to note that different fluids may transfer heat in different ways in the finned tube. For example, gas and hot oil typically use convection heat transfer, while steam uses a combination of convection and conduction. Therefore, the design and selection of finned tube heat exchangers needs to be selected and optimised for the specific fluid and application requirements.

In summary, the finned tube heat exchanger works by transferring heat from one fluid to another, which flows internally and externally through the finned tube. One of the fluids flows inside the tube and is known as the inner tube fluid. The other fluid flows outside the tube and is known as the external fluid. Heat is transferred between the inner and outer fluids via the fins, thus heating the air and completing the drying process.

Fin tube heat exchangers are widely used in industrial dryers, mainly because they offer several advantages:

Efficient heat transfer: finned tube heat exchangers provide a large heat transfer surface, resulting in efficient heat transfer. This can enable the dryer to remove moisture from the material more quickly and increase productivity.

Compact construction: The finned tube heat exchanger is compact and takes up little space, making it suitable for installation inside the dryer, thus reducing the footprint of the system.

Corrosion resistance: Fin tube heat exchangers are usually manufactured from corrosion resistant materials such as stainless steel, which can be used in harsh working environments and are not easily affected by corrosion.

Easy to maintain: The design of the finned tube heat exchanger makes it easy to maintain and clean, thus ensuring the long-term stable operation of the system.

In addition to the above advantages, finned tube heat exchangers also have some special application scenarios. For example, in certain high-temperature and high-pressure environments, finned-tube heat exchangers can be optimised to improve heat transfer efficiency and to ensure the safety and reliability of the system.

In conclusion, finned tube heat exchangers are widely used in industrial dryers, with the advantages of efficient heat transfer, compact structure, corrosion resistance and easy maintenance, which can help manufacturers to improve production efficiency and reduce production costs, thus obtaining greater economic benefits.