Röhrenheizelementen

Röhrenheizelementen, often translated as tubular heating elements, are a versatile electrical resistance heating devices. They consist of a resistance wire, typically made of Nichrome, coiled and encased within a metal tube. This tube is usually made of stainless steel, copper, or Incoloy, chosen for its corrosion resistance and heat conductivity. The space between the resistance wire and the tube is filled with an electrically insulating and thermally conductive powder, most commonly magnesium oxide. This powder ensures electrical insulation while efficiently transferring heat from the resistance wire to the outer surface of the tube.

The principle of operation is straightforward: when an electric current passes through the resistance wire, it heats up due to the Joule heating effect. This heat is then conducted through the magnesium oxide powder to the metal sheath, which in turn transfers it to the surrounding environment or the medium it is in contact with. Röhrenheizelementen can be formed into various shapes, such as straight tubes, U-shapes, or custom configurations, to suit specific applications. They are widely used in domestic appliances like ovens, washing machines, and water heaters, as well as in industrial processes for heating liquids, air, and solids. Their durability, efficiency, and adaptability make them a common choice for electric heating solutions.