Lord Fin Tube-Elliptical finned tube|Oval finned tubes

The provided information discusses elliptical finned tubes as high-efficiency heat exchange elements in heat exchange equipment, highlighting their various types, including elliptical rectangular, elliptical elliptical, elliptical circular, spiral elliptical flat, and elliptical H-shaped finned tubes. Oval finned tubes are acknowledged for their superior performance compared to round finned tubes and have found widespread use in industrial fields such as ethylene and oil refining.

Key points of elliptical finned tubes:

1. Advantages of Elliptical Finned Tubes:

   - Elliptical finned tubes offer advantages such as small external resistance, high heat exchange efficiency, and contribute to compact, lightweight, efficient, and miniaturized heat exchange equipment.

   - Despite these advantages, there is a scarcity of research on elliptical finned tubes, indicating potential for further investigation.

2. Fin Efficiency in Heat Transfer Calculations:

   - Fin efficiency is crucial in heat transfer calculations, and various methods exist for calculating the fin efficiency of elliptical fin tubes, mainly based on the equivalent method.

   - The notes that there are deviations in the equivalent method, and corrections should be made for more accurate results and practical guidance in projects. The need for more systematic research in this area is emphasized.

3. Comprehensive Research on Elliptical Finned Tubes:

   - Research on the internal and external characteristics and heat transfer laws of elliptical finned tubes has been comprehensive, with theoretical analysis, experimental research, and numerical simulation conducted by scholars globally.

   - However, there is a relative lack of studies on flat tube finned tubes, especially regarding the temperature and velocity fields inside and outside flat tube finned tubes.

   - While flat tube finned tubes exhibit low air-side resistance and high heat transfer coefficients, the text points out challenges related to large internal fluid resistance and limited refrigerant charge, restricting their application in heat exchangers.

   - Addressing the internal flow resistance of flat tubes requires more in-depth research for potential solutions.

Overall, the artical emphasizes the potential of elliptical finned tubes, identifies areas where further research is needed, and highlights the importance of addressing challenges associated with flat tube finned tubes in heat exchanger applications.

Elliptical finned tube |Oval finned tubes