Finned Tube

Finned tubes, by expanding heat transfer area and reducing flue gas-side thermal resistance, have become a core component for enhancing heat transfer and reducing energy consumption on low-temperature heating surfaces of boilers (economizers and air preheaters). Their application requires careful consideration of the boiler's flue gas characteristics and working fluid parameters, with the appropriate fin type (spiral fin tubes, H-shaped fin tubes, etc.) and material selection. By optimizing geometric parameters, fluid flow rates, and strengthening operational maintenance, the goals of efficient heat transfer, low energy consumption, and long life can be achieved. As boilers evolve toward higher performance and lower emissions, upgraded finned tube materials (such as new corrosion-resistant alloys) and structural optimization (such as high-efficiency, low-resistance fins) will become key future developments.