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DNA

DNA

Product catalog summary

Overview
The DNA Shell & Tube Heat Exchanger is designed to achieve significantly higher heat transfer rates compared to standard solutions. It is optimized for high-volume applications such as flue gas, hot air, and low-pressure steam. The design results in a smaller and lighter device while maintaining the mechanical strength typical of shell & tube heat exchangers.

Design and Performance
DNA heat exchangers represent an evolution in tubular heat exchangers, offering enhanced fluid dynamics and heat transfer. The special geometry of the tubes allows the heat transfer coefficient on the tube side to reach up to double the values of traditional designs, particularly benefiting high-viscosity media.

Advantages

Effective turbulent vortex flow due to helical tube geometry increases the heat transfer coefficient.
Homogeneous distribution of flow and velocity field.
Flexible tube bundle with low pressure drop, no dead spots, and vibration elimination.
Resistant to corrosion.

Technical Data
The document provides detailed technical parameters for various DNA models, including mass, tube and shell side capacities, and dimensions. Installation can be vertical or horizontal, and connection types are specified by model.

Applications

Low-pressure steam condensers
Industrial and chemical processes
Waste heat recovery
Water and steam systems

Construction and Materials
The heat transfer area is created by identical helical tubes with a diameter of 0.39 inches. The design is non-baffle with a homogeneous tube-bundle, providing high resistance to vibrations. The material used is stainless steel AISI 316L.

Working Parameters

Max temperature: 392°F (200°C)
Min temperature: -4°F (-20°C)
Max pressure shell side: 145 psi (10 bar)
Max pressure tube side: 232 psi (16 bar)

Media Compatibility
Compatible with water, steam, glycol, flue gas, air, ammonia, acetone, toluene, synthetic oils, and other media upon consultation.

Certifications
Manufactured in accordance with PED, ASME, EAC, and China ML standards.

Catalog excerpts

SHELL & TUBE

Open the catalog to page 1

SHELL & TUBE HEAT EXCHANGER DNA heat exchangers represent next step in the evolution of tubular heat exchangers. They deliver significant benefits in the areas DNA achieves significantly higher heat transfer rates comparing to standard solution. The design of the unit allows for more efficient operation in high volume applications (e.g. flue gas, hot air, low pressure steam). The construction of the DNA heat exchanger enables to obtain smaller and lighter device. At the same time, the exchanger retains all the advantages of the shell & tube heat exchanger, especially its high mechanical strength....

Open the catalog to page 2

DNA TUBE BUNDLE FEATURES Effective turbulent vortex flow increases heat transfer coefficient up to double values due to helical tube geometry. DNA HEAT EXCHANGER ADVANTAGES EFFECTIVE HEAT TRANSFER AREA TURBULENT FLOW Effective heat transfer area with more homogeneous distribution of flow and velocity field. LOW PRESSURE DROP Flexible tube bundle, low pressure drop, no dead spots, baffle-free, no need of shell compensator and elimination of vibration due to the multiple contact points along the tube bundle. LARGE HEAT TRANSFER AREA CONTAINED IN COMPACT CONSTRUCTIO

Open the catalog to page 3

K4 / K1 – inlet / outlet cold side DNA heat exchangers can be installed vertically K2 / K3 – inlet / outlet hot side or horizontally depending on the application C INSTALLATION TYPES TECHNICAL DATA TECHNICAL PARAMETERS Type Tube side capacity CONNECTION TYPE Flange Shell side capacity All dimensions and technical data are approximate only and may be changed without further notice.

Open the catalog to page 4

SHELL & TUBE HEAT EXCHANGER APPLICATION · low pressure steam condensers (flash steam condensers) · industrial and chemical processes · recuperation and regeneration in industrial technologies · waste heat recovery – diesel and gas engines, cogeneration systems · water and steam systems, cooling circuits · heat transfer area created by identical helical tubes of diameter Ø 0.39 in / 10 mm · many contact points along the tubes provide high resistance of tube bundle against possible vibrations · non-baffle design with a homogeneous tube-bundle WORKING PARAMETERS · max. temp.: 392°F / 200°C · min....

Open the catalog to page 5

DNA

DNA

Catalog excerpts

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