DELLOK YONGHUI Wound-wing G-type high-efficiency heat exchange finned tubes

DELLOK YONGHUI Wound-wing G-type high-efficiency heat exchange finned tubes

^{I. Product Definition and Core Positioning}

^{Embedded finned tubes are a type of high-efficiency, enhanced heat transfer element. Through a mechanical interlocking process, metal fins are tightly fixed to the surface of a base tube, forming a "fin-base tube seamless fit" structure. Compared to traditional wound or welded finned tubes, its core advantage lies in solving the thermal resistance problem between the fins and the base tube, significantly improving heat exchange efficiency. It also possesses stronger vibration and corrosion resistance, making it widely used in industrial equipment and HVAC systems requiring high-efficiency heat transfer.}

^{II. Core Structure and Process Advantages}

^{1. Innovative Structural Design}

^{1.1 Seamless Fit Structure: The fins form an interference fit with the base tube through an embedded process, eliminating the "contact thermal resistance" caused by welding or winding in traditional finned tubes. Heat can be directly transferred from the base tube to the fins, improving heat transfer efficiency by 30%-50% (data based on comparison with wound finned tubes under the same operating conditions).}

^{1.2 Optional Fin Shapes: Supports various fin designs including rectangular, serrated, and corrugated shapes. Customization is available based on media characteristics (e.g., viscosity, flow rate). For example, serrated fins are suitable for high-viscosity fluids, reducing media retention and scaling risk.}

^{1.3 Base Tube Material Compatibility: Base tubes can be made of carbon steel, stainless steel (304/316L), copper alloy, titanium alloy, etc. The fin material can be consistent with the base tube or a superior thermal conductivity material can be selected (e.g., copper fins with a steel base tube) to meet the requirements of different corrosion and temperature conditions.}

^{2. Precision Manufacturing Process: Automated production is achieved using CNC fitting machines. Fin embedding depth and spacing errors are controlled within ±0.05mm, ensuring uniform fit between each fin and the base tube. Subsequent surface treatments such as degreasing, pickling, and passivation enhance corrosion resistance and extend product lifespan (8-12 years under industrial cooling water conditions, far exceeding the 5-6 years of traditional finned tubes). III. Core Performance Advantages}

^{3.1 High-Efficiency Heat Transfer: Non-contact thermal resistance design + finned enhanced heat dissipation area (fin ratio up to 8-15, meaning the finned area is 8-15 times the surface area of ​​the base tube), suitable for heat transfer scenarios with "small temperature difference, large heat transfer," such as waste heat recovery and condenser sections of refrigeration units.}

^{3.2 Stable Structure and Vibration Resistance: The embedded process forms an integral structure between the fins and the base tube, resulting in 40% higher vibration resistance than welded finned tubes. It is compatible with high-frequency vibration equipment such as fans and compressors, avoiding the risk of fin detachment.}

^{3.3 Anti-Scaling and Easy-to-Clean: The smooth fin surface + tight interlocking structure reduces media retention in the fin gaps. For media containing dust or impurities, it can be quickly cleaned by high-pressure water washing or compressed air purging, reducing maintenance costs by 20%. 3.4 Wide operating condition adaptability: It can withstand a temperature range of -40℃ to 450℃ and a maximum working pressure of 3.0MPa. It is suitable for different scenarios such as low temperature refrigeration, high temperature waste heat utilization, and industrial boilers. The media compatibility covers water, oil, steam, and corrosive gases (such as light hydrocarbon media in the chemical industry).}

IV. Applicable Scenarios

V. Typical Performance Parameters (Customizable)

VI. Selection and Service Support

^{6.1 Customized Selection: We provide heat transfer calculation services based on operating conditions (medium, temperature, pressure, flow rate), recommending the  optimal fin shape and material combination to ensure the equipment achieves the design heat transfer coefficient.}

^{6.2 Quality Assurance: Each batch of products undergoes water pressure testing (1.5 times the design pressure), airtightness testing, and sampling inspection of heat transfer performance before leaving the factory, and test reports are provided.}

^{6.3 Installation Guidance: We provide product installation drawings and support on-site technical guidance to ensure the sealing of the finned tubes with the equipment, avoiding any impact on heat transfer efficiency due to improper installation.}