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april 2011

Advices for a good utilization of tubular electric heaters

Corrosion and noisiness of tubular electric heaters might be reduced through a few adjustments

Tubular electric heaters are usually resorted to inside open or pressurized water boilers or heaters, in order to get the fluid, normally water, to heat. For the sake of a better operation, their assembly should be done in a vertical position, but, especially, always submerged by the fluid to heat. Failure to comply with the last-mentioned condition, besides reducing its efficacy, might lead to a permanent breakage of the device, due to its excessive heat.
Tubular electric heaters are produced at the GNALI BOCIA plants by making use of very pure copper, in such a manner as to reduce, as much as possible, the corrosion effect which might derive from salts and from pollutants dissolved in water, being the same elements which, during the heating, give rise to the formation of micro gas bubbles which increases noisiness as well. Limiting the specific power to 9W/cm2 maximum, as in our articles, is a possible solution.
In order to additionally limit corrosive phenomena, tubular electric heaters are equipped with the possibility of installing a sacrificial magnesium anode. Besides, every resistance is equipped with a bulb so as to lodge a unipolar thermostat likewise available in the catalogue.
The productive cycle of tubular electric heaters is governed by the procedures drawn up according to the norms prescribed by the ISO 9001 standard, and is carried out on new generation machines and equipment, thereby abiding by the CEI/EN standards.


See also
04/01/2016 Electric tubular heaters capable of offering better resistance to corrosion. Copper at a high purity grade in order to build electric tubular heaters suited to house kettles

04/03/2015 A controlled process for the production of tubular electric heaters The assembly of the tubular electric heaters with components manufactured on last generation machines ensures their durability.

04/06/2014 Tubular heating elements and copper corrosion With hard or chlorinated water the tubular heating elements can be protected with a magnesium anode

04/03/2017 The importance of the specific power of electric resistances Electric resistances made of pure copper to reduce the effects of corrosion and increase duration over time.

04/03/2014 Home comforts with tubular heating elements Tubular heating elements have many advantages due to their versatility and usability in heating fluids for domestic use

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