The Range Of Heat Transfer Coefficient For Finned Tubes

The heat transfer coefficient range of finned tubes is usually between a film coefficient of 300 w/m2. k and 80 w/m2. k. Finned tubes, as a type of heat exchange element, increase the external surface area (or internal surface area) by adding fins on the surface of the heat exchange tube, thereby improving heat transfer efficiency. The specific value of its heat transfer coefficient depends on various factors, including the type, structure, material, and usage conditions of the finned tube. For example, T-shaped finned tubes (Gewa-T tubes or simply T-tubes) are one of the four main boiling enhancement surfaces internationally, with heat transfer performance close to or exceeding other types of tubes, exhibiting high heat transfer coefficients. In addition, the heat transfer coefficient of finned tube heat exchangers is generally evaluated based on the heat transfer coefficient on the outer surface of the base tube, and its numerical range also reflects the advantages of finned tubes in improving heat transfer efficiency.