HRS FUNKE DTA Series

Manufactured from AISI 304 / 316 stainless steel the HRS DTA Series is a tube in tube heat exchanger with the inner tube designed to carry the process media whilst the outer tube carries the service media. Supplied as standard in lengths of three and six metres with process tube diameters ranging from 1” to 4.5” the HRS DTA Series is capable of handling large particulates of up to 50mm. Three versions of corrugated tube are available for this unit including hard corrugation designed to generate maximum turbulence for an optimum pressure drop, and soft corrugation designed to increase wall velocity with the minimum of pressure drop.

Corrugated tube in tube heat exchangers have many benefits and advantages over comparable smooth tube versions:

- Heat transfer coefficients of up to 2½ times higher can be generated.
- There is no significant obstruction to the flow area of the tube so that they can be used for fluids with a high solid or fibre   content with no fear of blockage.
- Increasing the tube side heat transfer coefficient brings the temperature of the tube wall closer to the temperature of the   bulk fluid, minimising fouling.
- Due to the higher coefficients achieved, heat exchanger size can be reduced by as much as half.
- In-situ cleaning is improved because of the increased turbulence generated by the corrugated tube, which in lower   viscosity fluids minimises the tendency for deposition fouling to occur. If fouling does occur the deposits are normally   very easy to remove since corrugation leads to an uneven film thickness.

TYPICAL APPLICATIONS


Heating, cooling, pasteurising / sterilising, freezing, cooking, concentration for the food and dairy industries; heating and cooling for environmental and sanitary hot water processes as well as for the power generation and latex industries.