Corrugated Tube Heat Exchangers (CTHE): Monotubes-Multitube-Tripletubes when to use

This technology accumulate broad experience in heat transfer thanks to different companies manufacturing CTHE Corrugated Tube Heat Exchangers.
Expertise allows now to design and fabricate  XTube® range of CTHE, an improved and reliable array of heat exchangers very suitable for applications in Environmental Control, Chemical Industry, Food & Dairy, Automotive, Shipbuilding, Power and others.

Monotubes-Multitube-Tripletubes

Monotubes-Multitube-Tripletubes XTube® CTHE's are designed and fabricated to suit sanitary and non- sanitary applications.
If the process is sanitary all product side surfaces are polished to ensure a surface roughness Ra ≤ 0.8 μm. And the connections are those typical in the food, dairy and beverage industries.
Special care if taken when pharmaceutical processes are involved as the surface roughness demanded has lower values 0.25-0.4 μm (by electropolishing), seamless tubes and special sterile flanges or clamps.
When non-sanitary conditions surface roughness is not an issue but
high mechanical resistance, high temperatures and pressures, and
corrosive.

Range of XTube® Corrugated Tube Heat Exchanger if formed by three families of models.

Monotube geometry that is formed by tube-in-tube models

 Multitube geometry with a tube bundle inside  a shell 

Tripletube geometry formed by 3 or 4 tubes to form an annular space.

 Three geometries to process a vast type of products from low to averange and viscous products, also with particles or solids in suspension like fibers, dices 

Xtube® Monotube is used to process products under sanitary and non-sanitary conditions: Fluids with solids in suspension from small to big size (corrugated tubes can be up to 210 mm in diameter). Particulated products (products in pieces).

Xtube® with Multitube geometry can be used sanitary and non- sanitary applications. There are 3 families of multitubes:
XTube® B-Type for Industrial Applications (non-sanitary).
XTube® Multitube for sanitary applications in the Food, Dairy etc industries. Product side surfaces are polished to ensure a surface roughness Ra ≤ 0.8 μm.
XTube® Pharmagrade for pharmaceutical and biotech. Product side surfaces are polished to get a surface roughness Ra ≤ 0.25-0.4 μm.

Why Corrugated Tubes
Xtube® Corrugated Tubes increase the turbulence in the flow thus enabling a
more effective mixing and agitation that generates a higher heat transfer
coefficient than smooth tubes at the same conditions. Higher U-values
means a smaller heat exchanger. Furthermore, corrugation carries a "selfcleaning" effect that reduces fouling on the tube surface. Less fouling means smaller heat exchanger and longer production cycles.

Therefore Heat Transfer Specialists when you have to design a unit with high viscosity fluids consider CTHE in alternative with Spiral Heat Exchanger SHE or Shell&Tube HE's!

Credits to XLG Individual solutions for your industry