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HEXONIC CZ s.r.o.
DNA SHELL & COIL HEAT EXCHANGER

DNA SHELL & COIL HEAT EXCHANGER

Product catalog summary

Overview: The document discusses DNA heat exchangers, which are an advanced evolution of tubular heat exchangers. They offer enhanced hydraulic and heat transfer benefits while retaining the traditional shell & tube design features.

Key Features:

Higher heat transfer rates compared to standard solutions.
Efficient operation in high-volume applications such as flue gas, hot air, and low-pressure steam.
Special geometry allows the heat transfer coefficient in the tube side to double, benefiting high viscosity media.
Construction results in a smaller, lighter, and material-saving device with high mechanical resistance.

Design Advantages:

Flexible tube bundle with low pressure drop and no dead spots.
Baffle-free design eliminates the need for a shell compensator and reduces vibration.
Effective turbulent and swirl flow due to helical tube geometry.
Large heat transfer area in a compact construction, ideal for high-volume media.

Technical Specifications:

Heat transfer area created by identical helical tubes with a diameter of 0.39 inches (10mm).
Non-barrier design with a homogeneous tube-bundle.
Material: Stainless steel AISI 316L /1.4404.

Applications:

Low-pressure steam condensers, industrial and chemical processes.
Recuperation and regeneration in industrial technologies.
Waste heat recovery in diesel and gas engines, cogeneration.
Water and steam systems, cooling circuits.

Technical Parameters:

Max temperature: 397°F (203°C), Min temperature: -4°F (-20°C).
Max pressure: Shell side 145 psi (10 bar), Tube side 232 psi (16 bar).
Media compatibility includes water, steam, glycol, flue gas, air, ammonia, acetone, toluene, synthetic oils, hydrogen, and others after consulting the manufacturer.

Installation and Standards:

Vertical and horizontal installation options.
Manufactured in accordance with PED, ASME, EAC, China ML standards.

Connection Types:

Flanges available in stainless steel (AISI 316L /1.4404) and carbon steel (AISI 1015 / 1.0038).
All flanges are PN16 rated.

Catalog excerpts

DNA SHELL & COIL 7 HEAT EXCHANGER jMtT' y y

Open the catalog to page 1

4 DNA features DNA heat exchangers represent next step in the evolution of tubular heat exchangers. They deliver significant benefits in the areas of hydraulics and heat transfer while maintaining the features and benefits of traditional shell & tube design. DNA achieves significantly higher heat transfer rates comparing to standard solution. The arrangement of the heat exchange surface in the shell side allows for more efficient operation in high volume applications (e.g. flue gas, hot air, low pressure steam). Effective turbulent and swirl flow increases heat transfer coefficient up to double...

Open the catalog to page 2

TECHNICAL DRAWING K4/ K1 - inlet /outlet cold side K2/ K3 - inlet /outlet hot side MATERIAL TYPE stainless steel AISI 316L /1.4404 water and steam systems cooling circuits CONSTRUCTION • heat transfer area created by identical helical tubes of diameter 0 0.39in/ 10mm • many contact points along the tubes provide high resistance of tube bundle against possible vibrations • non-barrier design with a homogeneous tube-bundle

Open the catalog to page 3

Horizontal installation Vertical installation DNA SHELL & COIL HEAT EXCHANGER CONNECTION TYPE WORKING PARAMETERS max. temp.: 397°F /203°C max. pressure:MEDIA water, steam, glycol, flue gas, air, ammonia, acetone, toluene, synthetic oils, hydrogen and other media after consulting the manufacturer Manufactured in accordance with PED, ASME, EAC, China ML. flanges SS - stainless steel - AISI 316L /1.4404 flanges CS - carbon steel - AISI 1015 / 1.0038

Open the catalog to page 4

DNA SHELL & COIL HEAT EXCHANGER

DNA SHELL & COIL HEAT EXCHANGER

Catalog excerpts

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