High flux in-line heaters

High flux flange / in line heater enable you to exceed the limits to save space, increase productivity, work at very high temperature

The world is changing, and the industry of the 21st century faces new challenges!

CETAL has now more than 25 years experience on this technology!

Reliability and robustness are key drivers for our engineers.

Smaller equipment

Less space, weight, heat loss, cost saving, reduced thermal inertia

Increased productivity

More heat in less time for shorter production cycles

High temperature

Longer heater life in extreme conditions, very high temperatures

Customized product
Wire Ni-Cr 80/20
W/cm² : 10 à 200 W/cm²
Voltage: 24 V /48 V (DC), usually 110 to 750 V AC/DC, max medium voltage
Operational temperature: from -270 °C to +1000 °C
Pressure: superior to 300 bars

Temperature gradient improved by 10 compared to Magnesia
Heating 100% homogeneous (Straight wire)
Ring-shaped flow improves heat transfer up to 100 W/cm² and more
Available in ATEX/IECEx
Medium voltage
No leakage current at high temperature
Specific tube sheath to increase heat transfer coefficient and heat surface
Reduced heater weight

Stagnant water, max load 8 -12 W/cm², material: copper, 321, 316L
Circulating water, max load 10 -16 W/cm², material: copper, 316L, inc 800, inc 825
Boric water, max load 8 W/cm², material: 316L
Boiler water, max load 8 -16W/cm², material: 316L, inc 800, inc 825
Chlorated water, max load 6 W/cm², material: inc 825
Sea water, max load 3,5 -6 W/cm², material: inc 825, inc600
Demineralized water / deionized / distilled / Softened,max load 4 -6 W/cm², material: 316L, inc 800, inc 825
Domestic hot water, max load 4 -8 W/cm², material: copper, 316L, inc 825
Caustic water (2%, 10%, <30%, 70%), max load 2,3-7W/cm², material: 316L, inc 825, inc 600

Acetic acid, max load 6W/cm², material: 316L, inc 825
Boric acid, max load 6W/cm², material: inc 825
Chloric, Hydrofluoric, Nitric, Sulphuric acid, max load 1,5W/cm², material: teflon coat
Boric acid, max load 6W/cm², material: inc 825
Alkaline bath, max load 6W/cm², material: 321 (no corrosive compound), 316L
Phosphate bath, max load 4W/cm², material: 316L,inc 825

Ethylene glycol,Propylene glycol, 4 to 8 W/cm² acc to concentration, material: 321, 316L

Asphalt, tar, and other heavy or highly viscous compounds, max load 0,5 -1,5W/cm², material: 316L
Milk, max load 0,3W/cm², material: 316L

Air, max load 0,1 -8W/cm² acc. to sheath temp., material: 321
Circulating air, max load 0,1 -8 W/cm² acc. to sheath temp., material: 309
Natural gas, max load 0,1 -8 W/cm² acc. to sheath temp., material: 321, 316L
Argon, nitrogen, W/cm² acc. to sheath temp., material: 321, 316L, inc 825, inc 600
Propan, butane, W/cm² acc. to sheath temp., material: 321, 316L
Oxygen, hydrogen, W/cm² acc. to sheath temp., material: 316L

Heating element tube diameter according to application:
- High flux heating element : 8.5, 16, 19 mm
- Bolt heater: 10.7, 11.7, 12.2,15.7, 17.7, 19.7, 21.6, 24.6, 29.6 mm

Tube material: Inox (321, 316L, 309), Incoloy 800 et 825, Inconel 600
Wire Ni-Cr 80/20 (Max 1100°C on wire)
Straight shape: possibility to bend only in cold part, max angle 90°
Electrical connections on the same side 1Ph or 3 Ph.
Enable to have circular heat exchange in case of circulation heater
Temperature control can be done by a removable thermocouple in a sleeve located in the heart of the heater.
High conductivity of boron nitrid (gradient de T°C de 4 à 5°C) between wire and tube
Corrugation possible (tube thickness ~2 mm) , heat exchange surface increased/speed (Re and Prandtl number)