DNA heat exchangers constitute another step in the evolution of shell and tube exchangers. They provide a number of hydraulic and heat exchange improvements, preserving the features and benefits of the traditional design.
The HEXONIC DNA shell and tube heat exchanger represents another step in the evolution of shell and tube exchangers. It provides a number of hydraulic and heat exchange improvements while preserving the proven features and benefits of the traditional shell and tube design.
The DNA series achieves a significantly higher heat exchange coefficient than standard solutions. Its tube distribution inside the shell supports more efficient operation in high-flow installations such as exhaust, hot air, and low-pressure steam systems. Thanks to its unique tube-side design, the DNA exchanger is also compatible with high-viscosity media while retaining a high level of heat exchange. The result is a lower, lighter device with material savings and high mechanical resistance.
Key Features
- Higher heat exchange coefficient: The DNA series reaches a significantly higher heat exchange coefficient compared to standard shell and tube solutions.
- Ideal for high-flow media: Tube distribution in the shell enables more efficient performance in high-flow installations such as exhaust, hot air, and low-pressure steam.
- Compatible with high-viscosity media: The unique tube-side design allows efficient operation with high-viscosity media while maintaining strong heat transfer.
- Spiral tubes for turbulent rotational flow: Helicoidal Ø 10 mm tubes generate turbulent rotational flow, which doubles the heat exchange coefficient.
- Low pressure drops and no dead zones: The product page lists low pressure drops and a lack of dead zones among the core performance features.
- Extensive heat exchange surface in a compact footprint: The DNA provides a large heat exchange area in a lower and lighter exchanger.
- Strong mechanical resistance: Despite material savings and lower weight, the exchanger preserves the high mechanical resistance characteristic of shell and tube exchangers.
- Corrosion-resistant construction: DNA is made entirely of stainless steel, with titanium construction available for aggressive substances.
Design
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Helicoidal Ø 10 mm tubesensuring a turbulent rotational flow, increasing the heat exchange
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Stress-compensating tube packageEliminating vibration thanks to a large amount of contact points along the tube pack without the need to use baffles or shell compensator
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Expanded heat exchange areawith an equal distribution of flow and velocity
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Flanged connections
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Shell
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Dished head
Technical Specifications
| Parameter | Specification |
|---|---|
| Design Standards | PED, ASME, EAC, China ML |
| Max Design Pressure | shell side: 145 psi / 10 bar tube side: 232 psi / 16 bar |
| Max Design Temperature | 200°C/ 392°F |
| Shell Diameter Range | 159–550mm/ 6.3-21.7 in |
| Tube Materials | stainless steel AISI 316L / 1.4404 |
| Shell Materials | stainless steel AISI 316L / 1.4404 |
| Design Types | Installation position: H (Horizontal) – horizontal installation V (Vertical) – vertical installationNozzle configuration: CO (Common) – nozzles K2 and K3 in-line OP (Opposite) – nozzles K2 and K3 on opposite sides K5 – optional condensate drain connection |
| Connection Types | flanged connections, Connection size range: from DN80 (3″) to DN300 (12″) |
| Certification | PED; ASME; EAC; China ML |
Applications
Full range
a full range of exchangers sizes allows to choose the right size for the application
Quality guarantee
airtightness and high quality make of exchangers are confirmed during pressure testing and quality control
Technical support
we help selecting appropriate exchanger for particular application and technical requirements
Certificates and standards
exchangers manufactured in accordance with PED or ASME
Frequently Asked Questions
The DNA series adds hydraulic and heat exchange improvements to the traditional shell and tube design. HEXONIC states that it achieves a significantly higher heat exchange coefficient, uses spiral tubes to create turbulent rotational flow, and is built to be lower and lighter while maintaining strong mechanical resistance.
The DNA is especially suited for high-flow installations such as exhaust, hot air, and low-pressure steam, and it is also compatible with high-viscosity media thanks to its unique tube-side design.
Key design features include helicoidal Ø 10 mm tubes for turbulent rotational flow, a stress-compensating tube package that reduces vibration without baffles, and an expanded heat exchange area with even flow and velocity distribution.
Yes. The standard DNA is made entirely of stainless steel for corrosion resistance, and HEXONIC also offers the possibility of making the exchanger from titanium for aggressive substances.
