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2012-03-09 HRS Heat Exchangers delivers thermal processing solutions in United States "HRS Process Technology has recently supplied Unicus hygienic scraped surface heat exchanger for an expansion of the company’s concentrated chicken broth plant. ...

2012-02-15 HRS Heat Exchangers - helping to improve overall efficiency of Gas Compressors installations High overall efficiency of the installation is ensured by the patented design of the HRS corrugated tube heat exchanger that achieves the required...

2011-11-30 HRS Heat Exchangers delivers heat recovery solutions to Waste Recycling Group HRS Heat Exchangers supplied WRG with two KH 225 273/12 4.0m Shell and Tube heat exchangers. Waste heat recovery in the High Pressure Hot Water (HPHW) for the EfW incinerator that feeds a turbine.....

AS. Food Industry Triple Tube(The triple tube or annular space heat exchanger)

With this type of heat exchanger the smaller inner tube and larger outer tube carry the service media whilst the process media passes through the annulus between the two tubes. The tube diameters range from 1” inner tubes to 6” outer tubes as standard, with unit lengths available in three or six metres. Manufactured from AISI 304 / 316 stainless steel the HRS AS uses innovative corrugated tube technology. Three types of corrugation are available, dimple for low Reynolds numbers, hard corrugation for high Reynolds numbers and soft corrugation for medium Reynolds numbers.

Tripple Tube AS Series Heat Exchanger -- HRS FUNKE

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.
Tripple Tube AS Series Heat Exchanger -- HRS FUNKE

Applications.

  • Medium to high viscosity fluids.
  • Fluids containing fibres or small particulates.
  • Food applications, industrial applications.

Materials.

  • Service side: AISI 304 stainless steel.
  • Product side: AISI 316L stainless steel.
Tripple Tube AS Series Heat Exchanger -- HRS FUNKE

Connections.

  • Service side: Flanged.
  • Product side: Clamp.

Finishing.

  • Externally polished.
  • Product side: roughness < 0,8 microns.

Design conditions.

  • Service side: 10 barg / 150 ºC.
  • Product side: 10 barg / 150 ºC.

An expansion bellow is fitted in the outer shell for absorbing the differential expansion between the shell and the second tube.

Tripple Tube AS Series Heat Exchanger -- HRS FUNKE

The innermost tube is removable, which allows for inspection of the product annulus. For large duties, multiple units can be interconnected and mounted in a frame

Typical Application:

Heating, cooling, pasteurising / sterilising, freezing, cooking and concentration for the food and dairy industries.

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