High energy heating systems
High energy heating systems
High-energy heating systems promise high performance in a very confined space. They are required wherever high quantities of heat have to be introduced into products. This product group is characterised by extremely short heating-up times and, if necessary, also high final temperatures.
Tubular heaters
Tubular heaters are used in nearly every section of the modern industry.
Due to their modular design and the stability of a high-compressed heating element it is possible to heat almost any medium. The boundary conditions like operating temperature, surface power, medium and ambient conditions are decisive for choosing the right material. The maximum surface power of the different tubular heaters is equivalent to the material and linked to the intended application. Following are rough values for surface power:
Water (resting -100°C – 8 to 14W/cm²), oils (thin, resting - 100°C - 3W/cm²), air (0,5m/s – 100°C - 4W/cm²). Tubular heaters are available with a diameter of 6.5mm, 8.5mm und 11mm and with tube sheathing made of copper, steel and stainless steel 1.4541, 1.4571, 1.4876, 2.4858.
Following are rough values for the maximum admissible surface temperatures of the tube sheathing and have to be evaluated on a case-by-case basis:
Copper 250°C, steel 400°C, stainless steel 750-900°C.
Plug-in/screw-in heating elements
Plug-in/screw-in heating elements differ from heating registers and/or flange heaters with regard to size and power. The range extends from small to handy designs used in household our industrial appliances for the direct heating of water or aqueous solutions. Generally, these heating elements consist of one or more loop-shaped, bent tubular heaters ending in a compact, mostly cylindrical connection housing.
The immersion depth – i.e. the length of the tubular heating – is approx. 200 mm to 800 mm.
It is made of copper, steel and different types of stainless steel.
In most cases the nominal wattage is restricted to a range of 1000W to 9000W.
The connection housing of screw-in heating elements have a screw head with an internal thread for easy assembly at the usage site. Upon request, the tubular heating element can be supplied in the connection housing, together with an optional temperature sensor, wired on terminals ready for connection. A possible further option is a direct integration of a controller in the connection housing, enabling an autarkic operation of the heating element.
Heating register
Heating registers and electric flange heaters were designed to heat different fluid and gaseous media by means of direct contact. It does not matter whether it concerns steam generation or heating/temperature maintenance of water, oils, bitumes or non-flammable gaseous media and vapours. The used materials and designs differ considerably depending on the operating temperature, surface power, medium and environmental conditions. According to the application, the basic design includes highly compressed tubular heating elements usually of diameter 6.5mm, 8.5mm, 11.0mm, 16.0mm and bar-shaped cartridge heaters of diameter 8.5mm, 16.0mm, 25.0mm or oval tubular heating elements measuring 16x16mm.The design and the quantity of heating elements used per heating register depends on your requirements. The used tube plates (flange plates) correspond with the actual norm for the respective field of application and are also available in different types of steel and stainless steel like the tubular heaters and the heating cartridges.
The choice of the connection housing falls to well-known manufacturers and the common material powder coated sheet steel or stainless steel. The heaters are ready for connection and wired on terminals in the connection housing with the optional temperature sensors for the medium temperature and/or for the heater temperature.
