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CORRUGATED TUBE IN TUBE HEAT EXCHANGERS
 UK Exchangers' Tube in Tube Heat Exchangers utilise corrugated
tubes, which generate turbulence in both media to ensure uniform
temperature distribution. This improves the heat transfer
co-efficient by up to 60% compared to a conventional smooth
tube design.
We offer two types of exchanger. The mono tube design has
a single tube within a tube, and the multi-tube design has
a number of tubes inside a shell.
Standard units can be connected in series and/or in parallel
by means of 180° bends, to suit the specific design requirements.
Multiple units can be supplied mounted on a stainless steel
frame.
 Advantages:
- Uniform temperature distribution and thermal processing
- Increased run times before cleaning is required, due to
turbulent flow and reduced fouling
- Up to 60% greater efficiency over a plain tube design,
giving rise to much reduced exchanger size
- Low maintenance cost - minimal spares required
- No "dead spots" within the process circuit,
thus responds extremely well to CIP
Mono-tube design 
The mono-tube design is used to process fluids containing
large particulates, fibres and cells up to 50 mm diameter
including:
- Effluent water
- Dye-house effluent
- Digestion sludge
- Pet food
- Grain slurry
- Fruit pulps
The mono-tube unit is an all-welded tube in tube type exchanger.
The process fluid passes through the inner tube, whilst the
service media goes through the outer tube. Both inner and
outer tubes can be corrugated.
For high temperature duties, expansion bellows are incorporated
in the outer shell.
Multi-tube design
The multi-tube design is suitable for viscous media and media
containing small particulates, including:
- Dairy products
- Sugar syrups
- Purees · Sauces
- Juices
- Malt extracts
- Process water
- Paint
- CIP heaters
- Vegetable wash water
- Concentrates
- Tomato products
The multi-tube unit consists of a number of small diameter
tubes mounted inside a larger diameter shell. The process
fluid passes through the tubes, with the service media passing
through the shell.
The exchanger can either be supplied fully welded or have
removable ends to allow greater access to the inner tubes.
For high temperature duties expansion bellows are incorporated
in the shell.
Typical Uses:
- The heating and/or cooling of ethanol, glycol, isopropyl
alcohol, toluene, benzene, heavy fuel oil, mineral and synthetic
oils, slurries, resins, emulsions, fatty acids, glycerine,
orimulsions, solvents, latex effluents......
- Fruit juices, purees, concentrates, milk, cream, yoghurt,
butter, casenates, baby food, beer wort, whiskey wort, vegetable
and edible oils, sauces, margarine, coffee extract, diced
tomato, tomato paste, gelatines, ice cream mix, ketchup,
mustard, egg yolks and whites, mayonnaise, sugar molasses,
syrup, tea, soft drinks, wine must, confectionery paste......
- Sterile distilled water, water for injection, blood plasma......
- Paints, waste water, sewage sludge, dye house effluent,
slaughter house blood, laundry effluent, shampoo, body lotions,
perfumes, shaving gels, creams......
Technical Specification
Standard materials: Stainless steel AISI 304 & 316
Standard lengths: 3,000 & 6,000 mm (other lengths available)
· Maximum working pressure: Process side - 25 bar,
Service side - 16 bar
Designs: AD Merkblatter, ASME VIII, American 3A
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