Spirally wound tubular heat exchanger

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Spiral-wound tubular heat exchangers are also known as turbulent flow heat exchangers, double-spiral tube heat exchangers, spiral tube heat exchangers, or helical tube heat exchangers. The spiral-wound tubular heat exchanger is a type of heat exchange equipment developed on the basis of foreign heat exchange technologies and China’s current heat exchange devices. A heat transfer element combining internal and external threads, made of stainless steel with a high thermal conductivity, is used to create spiral-wound tubular heat exchangers that generate intense turbulence with low fluid resistance, thereby increasing the heat transfer coefficients inside and outside the tubes. I. Product Performance 1. The spiral-wound tubular heat exchanger features a high heat transfer coefficient: under steam-water heat exchange conditions, this coefficient can reach 14,000 W/㎡·℃. 2. Spiral-wound tubular heat exchangers are less prone to scaling: The openings on the same end cap are spaced 100° apart, which allows the heat exchanger to participate in heat exchange without any dead zones ； The double-walled tube bundle induces a spiral flow of the fluid, resulting in turbulence; the fluid exerts a strong scouring force on the tube walls due to centrifugal force, which makes scaling less likely and reduces subsequent maintenance costs. 3. Spiral-wound tubular heat exchangers are less prone to leakage: The fully automatic welding method ensures a tight joint at the welds, resulting in a long service life for the seal. The threads of the heat exchange tubes resemble those of expansion joints, providing compensation capabilities; as a result, the heat exchanger experiences low thermal stress and is less likely to leak. 4. Spiral-wound tubular heat exchangers occupy less space: they have a large heat transfer area per unit volume, resulting in a high overall heat transfer coefficient; moreover, they require less floor space, which saves on construction costs. 5. The spiral-wound tubular heat exchanger is easy to install: it comes in vertical and horizontal versions, which facilitates installation under different operating conditions ； It is compact in size; no crane is required for operation, and it can be installed manually. II. Application Areas 1. Types of heat transfer media: Spiral-wound tube heat exchangers are primarily used for vapor-liquid and liquid-liquid heat transfer. 2. Product Applications: With the implementation of policies aimed at energy conservation and emission reduction, spiral-wound tubular heat exchangers have come into use. The use of spiral-wound tubular heat exchangers **reduces waste emissions and enables the reuse of waste, thereby saving production costs. Spirally wound tubular heat exchangers are suitable for use in the chemical, heat treatment, petroleum, food, steel, metallurgy, automotive, power, building materials, light textile industries, as well as in heating, ventilation, and air conditioning systems.