Dimpleflo Double Tube Heat Exchangers

The Dimpleflo Double Pipe Heat Exchanger (also known as “Tube-in-Tube”) is the simplest configuration of hygienic heat exchanger. The product flows through the inner heat transfer tubes and the service fluid flows through the surrounding shell. Because of its configuration and geometry, the Dimpleflo Double Tube is a true counter current heat exchanger providing absolute product integrity.  Using dimple tube  technology, both heat transfer and efficiency are increased over conventional smooth tube heat exchangers. A further benefit the turbulence enhancing dimples is potential fouling is minimised, especially for fouling and viscous product



How it works...

Benefits and Features

Dimpleflo Double Tube Heat Exchangers are suitable for fluids containing stringy fibres, chunks or other particles and low-high viscosity fluids. For extremely high viscosity food products like honey, fruit jams, pet mince and marmalades, please refer to our Dimpleflo Tri-Tube Heat Exchanger range.


Heating, cooling and pasteurising applications where Dimpleflo Tube-in-Tube type heat exchangers have been used, include:
  • Cooling Blood plasma

  • Heating & Sterilizing Pyrogen free water/water for injection

  • Processing Injectables

  • Chilling Grape Must
    (including skins and stalks)

  • Heating & Cooling Jam and Fruit Pastes

  • Pasteurising Custards

  • Cooling Whole Fruit Yoghurts

  • Heating & Cooling Fruit juices
    (including concentrates)

  • Cooling Pet food, Mince and offal.

  • Maintaining Chocolate temperatures

Expansion bellows are integrated in the outer shell to absorb differential expansion and contraction between shell and inner heat transfer tube. Options for the Double Tube Heat Exchanger configuration includes ceiling or wall mounting, insulation (for chilled or high temperature) and stainless steel cladding.

All Teralba Heat Exchangers are manufactured with 316 stainless steel dimpled heat transfer tubes as standard. Heat exchangers for tomato based products, products high in salt and other corrosive ingredients, can be manufactured using 2205 duplex material. Titanium heat transfer tubes and super duplex heat exchangers are also available. Teralba have manufactured these tube-in-tube type heat exchangers as jacketed heat transfer lines, vertical heat exchangers and virtually any shape or size.

For heating and cooling of pharmaceutical and veterinary products, Dimpleflo Monotube Heat Exchangers can be supplied with internal surface finishes of 0.4Ra and complete quality assurance.

For further information or to obtain a heat exchanger selection and quotation please email your requirements through to our experienced heat transfer engineers at: sales@teralba.com or phone: 1300 20 70 20