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Home » Products » Heat Exchangers » Dimpleflo Heat Exchangers » Dimpleflo Double Tube

Dimpleflo Double Tube Heat Exchangers

The Dimpleflo Double Pipe Heat Exchanger (also known as “Tube-in-Tube”) is the simplest and most robust configuration of hygienic heat exchanger. Dimpleflo tube in tube heat exchangers are utilised for fluids containing stringy fibres, chunks or other particles and low-high viscosity fluids.

A tube in tube heat exchangers involves the product flowing 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 heat exchanger 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

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Double-Pipe-Heat-Exchanger-for-cooling-fruit-juice-and-crushed-grapes

Tube In Tube Heat Exchanger Types

Industrial Tube In Tube Heat Exchanger

Sludge Tube In Tube Heat Exchanger

Sanitary Tube In Tube Heat Exchanger

Winery Tube In Tube Heat Exchanger

Waste Tube In Tube Heat Exchanger

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.

How A DOUBLE PIPE HEAT EXCHANGER works...

With configuration of one pipe inside a larger pipe (double pipe heat exchanger) product flows into the inner tubes while service fluid flows in the surrounding pipe. 

Benefits and Features

  • Heat Transfer tube are designed to free drain with no continuous corrugations to retain product or CIP fluids.
  • Over 30 years’ experience in the design and manufacture of dimple tube heat exchangers.
  • Strippable Double Pipe Heat Exchangers can be manufactured for product-to-product heat regeneration requirements.
  • Extremely robust design with many Dimpleflo Monotube Heat Exchangers supplied into the Australian & New Zealand wine industry in the 1980’s, still in use today!
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Applications of a double tube heat exchanger

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 (wfi)

  • 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

Double Tube Heat Exchangers Customised For Your Application

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.

Designed With High Quality Stainless Steel For Versatility

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.

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Why Choose Teralba Industries As Your Double Tube Heat Exchanger Supplier?

Over 30 Years Of Industry Experience

Custom Engineered Double Tube Heat Exchangers For Any Industrial or Sanitary Application

Ongoing Support, Servicing & Maintenance

Teralba’s heat exchanger experts offer ongoing support for all industrial scraped surface heat exchangers from simple servicing and sourcing spare parts.

Custom Engineered Solutions

Our double tube heat exchangers are a highly effective way of processing challenging viscous products and being custom designed for your process results in minimised product fouling which saves production costs.

PROVIDING ONGOING SUPPORT & MAINTENANCE

With over 35 years in the design and manufacture of tube-in-tube heat exchangers we have many units in service in various industries today. If your tube heat exchanger requires servicing, our dedicated heat exchanger service department has the expertise and experience to refurbish any tubular heat exchanger. They also offer a heat exchanger optimisation service to ensure your heat exchanger is operating at peak performance.

Frequently Asked Questions

How does a double tube heat exchanger work?

A double tube heat exchanger or water tube heat exchanger works by conduction. If it’s used to cool a substance, then the higher temperature flow requiring cooling runs through the inner tube, while the cooling media (typically chilled water or glycol) runs through the outer tube. In this way, the heat from the liquid in the inner tube transfers through the pipe wall. The tubes are typically made of stainless steel to conduct heat, although other materials can also be used, depending on your heat transfer  requirements.

What are double pipe heat exchangers used for?

Double tube heat exchanger design is such that this equipment can be used for an amazingly wide variety of reasons. For healthcare purposes, a double pipe heat exchanger can be used for cooling blood plasma, processing injectables and sterilising and warming water for injections. Double pipe heat exchangers are also used extensively in the food industry for chilling grape must (crushed grapes), heating or cooling jam, pasteurising custard, cooling yoghurt, heating and cooling fruit juice, cooling pet food and other meat products and maintaining the temperature of chocolate.

What is the efficiency of a tube-in-tube heat exchanger?

Tube-in-tube heat exchangers are designed with efficiency in mind. The simple design of a tube within a tube means that products are warmed and cooled efficiently with consideration given to the velocity of the product through the tube and velocity of the heating/cooling media in the jacket. working equally well at high or low temperatures. Tube-in-tube heat exchangers are also aerodynamically and hydrodynamically designed, enabling them to withstand high pressures.

What is the difference between double pipe and shell and tube heat exchanger?

A double pipe heat exchanger comprises a tube within a tube, with the inner tube carrying the liquid or product to be heated or cooled and the outer tube carrying the flow that will perform the heating or cooling.

A shell and tube heat exchanger works on a similar principle but consists of an outer shell containing many pipes inside, thus increasing the heat transfer area. This type of exchanger is also known as a multitube heat exchanger.

What are the benefits of the baffles in a shell and tube heat exchanger?

A baffle inside a shell and tube heat exchanger is a panel that directs flow across and around the heat exchanger tube bundle, creating turbulence and increasing the heat transfer coefficient. .

An integral part of multitube heat exchanger design, baffles have a number of benefits. They hold inner tubes in the correct position, prevent steam starvation, and help guide liquid in the right direction to increase velocity and efficient heat transfer as well as aid in mixing.

How to repair a double tube heat exchanger?

If you encounter an issue such as a double tube heat exchanger rupture or blocking, help is at hand. Teralba offers a full maintenance and repair service to keep your double tube heat exchanger in great condition and make repairs as necessary.

We stock a full range of spare parts to ensure that your repair is as quick and easy as possible.

Our experts can also carry out a double tube heat exchanger calculation as part of our assessment service to either diagnose a fault or to optimise performance.

What Materials Are The Tubes Made Of?

The tubes are typically made of 316 stainless steel with a dimpled profile to conduct heat, although other materials can also be used, including super duplex stainless steel and titanium, depending on your requirements.

Does Teralba Industries offer any ongoing servicing & maintenance for double pipe heat exchangers?

Teralba Industries has an expert heat exchanger servicing team and conducts ongoing servicing & preventative maintenance for double pipe heat exchangers. Our team can also assist with spare parts sourcing for heat exchangers & repairs. A detailed service report on completion if required.  

Based in NSW, Teralba operates across Australia and the world to build industrial customised heat exchangers, translating your unique needs into an efficient heat exchange system.

Whether you want to find out more about installing or commissioning a double tube heat exchanger, need an emergency repair or want to know how to optimise the performance of an existing double pipe heat exchanger, the team at Teralba can help you.

Simply use the contact page to submit your enquiry or give us a call on 1300 20 70 20 so we can discuss your requirements.

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

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