Elliptical (Oval) Finned Tube: Aerodynamic Efficiency and Low Friction Resistance

Friction resistance, one of the greatest challenges of fluid mechanics in heat transfer systems, is minimized with the Elliptical (Oval) Finned Tube design. The oval structure, developed to reduce form drag, optimizes the turbulence exhibited by the fluid as it passes over the tube surface. The elliptical form, which exhibits superior performance compared to circular tubes, increases the heat transfer coefficient while lowering fan energy consumption.

The oval finned tubes produced by Fintherm are exceptionally resistant to mechanical stress thanks to their robust structure. These bimetal tube systems, providing full protection against atmospheric corrosion, have been tested in environments where strong chemicals are used and are designed to be easily cleaned with steam or pressurized water.

Technical Dimensions and Manufacturing Standards

Manufactured from carbon steel, stainless steel, or copper materials according to customer demands and system requirements, elliptical finned tubes are suitable for both spiral-finned and plate-fin methods. Pressing the fins inward around the tube under pressure during the manufacturing stage ensures zero gap between the fin and the tube, perfecting thermal conduction.

• Oval Single-Tube Manufacturing: Standard tubes with dimensions of DxC=35×14 mm are used.
• Oval Double-Tube Manufacturing: Dimensions of DxC=26×12 mm are preferred for high-capacity needs.
• Coating Options: Hot-dip electro-galvanizing options are offered to increase corrosion resistance and slow down oxidation.

Advantages and Features of Elliptical Finned Tubes

Elliptical finned tube systems bring many technical advantages over traditional circular systems. These structures, which maintain their form especially under high temperature and pressure, offer economic solutions that provide energy savings:

• High Operating Temperature: Depending on the material type, it is fully compatible with operating temperatures between 285°C and 300°C.
• Resistance Reduction: It minimizes pressure loss on the air side thanks to its aerodynamic form, which provides fan energy savings in operating costs.
• Mechanical Strength: Fins integrate with the tube through internal expansion and tight-fitting methods; no performance loss occurs even in vibrating environments.
• Flexible Material Selection: Can be custom manufactured for your project from DKP (cold-rolled steel), copper, brass, and stainless tube varieties.

Application Areas and Usage Efficiency

Thanks to their optimized thermodynamic properties, these finned tubes are indispensable for industrial cooling and heating processes. While carbon steel welded or seamless tube models are armored against corrosion with hot-dip electro-galvanizing, stainless steel models are preferred in hygienic processes and lines containing aggressive chemicals.

The compact design advantage provided by the elliptical (oval) form stands out especially in air handling units, drying ovens, and oil cooling units that require high heat transfer surfaces in narrow spaces.