Our tubular heaters are used anywhere you need to heat something – whether for industrial applications or in the home. Typical applications include air heaters, ovens, stationary heating installations, drying ovens and heater batteries. All tubular heaters for air heating are made of stainless steel.
DEW heating element calculator
With the DEW heating element calculator you can comfortably calculate important values for the heating element you are looking for. Determine, for example, the power required to warm up a substance with a specific mass from temperature T1 to T2 in a certain time.
Select the value that you want to calculate, enter all values and click "Calculate":
Outer diameter: Ø 6.5 / 8.5 / 12.5 mm
Stretched length: around 300 mm – 7,000 mm (Ø 6.5 mm only up to around 4400 mm) – Unheated length: around 40 mm – 1,000 mm
Material: 1.4541 / 1.4404 / 1.4828 / 1.4876 / 2.4858
Power: 50 W – approx. 10,000 W (other power ratings available on request)
Design
On the inside, the stainless steel tubular heaters from DEW consist of a specially designed wound heating coil. Welded-on connecting bolts at the ends allow electrical contacts to be made and guarantee the required unheated length. The heating coil is installed in the casing pipe with our filling machines and electrically insulated by filling the assembly with magnesium oxide.
The filled heating elements are then densely compacted with rollers and prepared in the annealing furnace for further processing – for example shaping or joining to fastening elements. It is also possible to join heating elements into larger assemblies. Once the electrical contacts have been attached, as the last step the tubular heaters are tested against the specified parameters and packaged.
