Coil wound heat exchangers

Multiple spirally wound tube bundles
Multiple spirally wound tube bundles

Proven cutting-edge technology for high-efficiency, high-pressure and high-temperature duties

Proven cutting-edge technology for high-efficiency, high-pressure and high-temperature duties

Heat exchangers

GREENTUBE™

Heat exchangers

GREENTUBE™

The GREENTUBE™ coil wound heat exchanger stands out for its unique ability to handle simultaneous heat exchanges between multiple fluids within a single shell. Engineered for the most demanding environments, it operates at pressures reaching 300 bar on the shell side, and up to 1400 bar on the tube side and temperatures ranging from -250°C up to 650°C. Unlike standard technologies, this coiled tube bundle offers unparalleled mechanical flexibility, absorbing differential expansion without fatigue during rapid or extreme thermal cycles.

The GREENTUBE™ coil wound heat exchanger stands out for its unique ability to handle simultaneous heat exchanges between multiple fluids within a single shell. Engineered for the most demanding environments, it operates at pressures reaching 300 bar on the shell side, and up to 1400 bar on the tube side and temperatures ranging from -250°C up to 650°C. Unlike standard technologies, this coiled tube bundle offers unparalleled mechanical flexibility, absorbing differential expansion without fatigue during rapid or extreme thermal cycles.

Thanks to their high thermal efficiency, compactness, and ability to withstand extreme pressures and temperatures, Coil Wound Heat Exchangers have become essential equipment in modern industries such as Oil Refining, Chemical, Power Generation, Nuclear Energy, and Metallurgy.

Designed to operate under the harshest conditions, this type of heat exchanger offers superior performance with lower footprint, making it a preferred alternative to traditional shell & tube exchangers, especially in large-scale and high-pressure applications.

Coil Wound Heat Exchangers consist of spirally wound tubes arranged within a shell, with enhanced heat transfer features such as corrugated tubes, internal fins, or external bellows. This design promotes turbulence, drastically improving thermal performance and enabling significant savings in space, energy, and operational costs.

Our Coil Wound Heat Exchangers are built with one or more groups of spirally wound tubes, supported inside a pressure vessel. The spiral winding and tube geometry are selected based on the customer’s exact process conditions, including flow rates, pressure drops, media type, and thermal approach.

This technology enables efficient handling of up to 8 different process streams simultaneously for heating, cooling, or condensation. The continuous spiral path creates turbulent flow, boosting heat transfer and reducing surface area requirements.

Coil Wound Heat Exchangers are designed for pressures up to 300 barg on the shell side, and up to 1400 barg on the tube side, with temperature ranges from -250°C to +650°C.

Heat exchangers

Main features

Main features

Spirally Wound Tube Bundles

A unique configuration in which heat exchange tubes are wound spirally, creating a long flow path that enhances turbulence and heat transfer.

High Pressure & Temperature Resistance

Designed for extreme process conditions, coil wound heat exchangers operate up to 1400 barg and 650°C, ensuring reliability and safety even under the most demanding duties.

Compact Footprint

Thanks to their vertical arrangement and high thermal performance, coil wound heat exchangers occupy only about one-tenth of the space required by conventional shell & tube exchangers.

Low Temperature Approach

The extended time of the fluid inside the spiral tubes enables a temperature approach as low as 5°C, optimizing energy recovery and process efficiency.
Tubes

Materials available

Tubes

Materials available

Tubes materials

• Stainless steel
• Carbon steel
• Duplex and Superduplex
• Special alloys (Inconel, Hastelloy, Monel)
• Copper, Aluminium
• Others upon request

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Industries

greentube

Industries

All industries where CWHE is available

Services

Heat exchangers maintenance and spare parts

Services

Heat exchangers maintenance and spare parts

Find all the information you need about maintenance and spare parts for our heat exchangers. We’re committed to providing you with the best possible service and keeping our products as efficient as possible.

service
Heat exchangers - nexson

GREENTUBE™

Heat exchangers - nexson

GREENTUBE™

To find out more about our CWHE, download our brochure!

Address

685 rue Jules Verne
58600 Garchizy, France

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