What is the heating element?

Heating element is a device used for conversion of electric energy into heat, consisting of a heating resistor and accessories. Such as metal tubes, MGO powder, resistance wire coil, terminal pin etc.

Heat is generated by the passage of electric current through a resistor through a process known as Joule Heating. Heating elements are used in household appliances, industrial equipment, and scientific instruments enabling them to perform tasks such as cooking, warming, or maintaining specific temperatures higher than the ambient.

So will the surface of the electric heating tube charged?

We all know that the heating wire of the heating element is charged, so is the surface of the electric heating tube charged? The answer is no.

Electric heating tubes are widely used in heating liquids because the surface is not charged. So why is the surface of the electric heating tube not charged? That's because the gap between the heating wire and the shell of the electric heating tube is generally filled with magnesium oxide powder (MgO), that is both insulating and thermally conductive.

MGO powder inside the heating element was compressed via heater shrinking machine, which with good insulating.

So, surface of electric heater no charged.

There are many heating elements in our daily life, such as rice cooker, water heater, oven, water dispenser, electric pot...

Can you also find some heating elements around our life?