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
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.
Cooling Blood plasma
Heating & Sterilizing Pyrogen free water/water for injection
Chilling Grape Must
(including skins and stalks)
Heating & Cooling Jam and Fruit Pastes
Cooling Whole Fruit Yoghurts
Heating & Cooling Fruit juices
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.
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 cooler flow 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 requirements.
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.
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.
A double pipe heat exchanger comprises a tube within a tube, with the inner tube carrying the liquid 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. This type of exchanger is also known as a multitube heat exchanger.
A baffle inside a shell and tube heat exchanger is a panel that either directs flow across the tube bundle, creating turbulence and increasing the heat transfer coefficient. .
An integral part of tube-in-tube 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.
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.
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.