If we pursue high power, we should increase the surface area to ensure that the surface power will not exceed the standard. At the same time, in order to ensure the high power, there must be enough current, so there is a limit of power when the surface area is certain, and the quality of making super power electric heater can not be guaranteed.
Misunderstanding 1: the higher the power, the better
The resistance of the heater wire is selected according to the set power. The greater the power, the smaller the total resistance. There is a proper range of electric resistance of electric heating wire. If the electric resistance is too large or too small, it needs very short or very long, very thin or very thick electric heating wire, so it is difficult to manufacture and use electric heaters with large and small power. One of the important parameters of the electric heating wire is the surface power. If the resistivity is too large, the surface power will be large after passing a certain current. Therefore, small diameter and small current are selected for small power electrical appliances, but the size of the current determines the size of the resistance, and the length and diameter of the heating wire are calculated
Misunderstanding 2: the thinner the better
Some customers in the selection of heaters blindly thin requirements, and as a sign of the strength of the manufacturer. In fact, heaters with a thickness of only 0.5 can be made without requiring power and service life, but the process is a little more complicated.
Misunderstanding 3. Judging by color
The surface of some heaters in Europe and America is gray green, and the brightness of some heating rings made in China is very high. In fact, these are the relationship between surface treatment and even less tempering process. A kind of
Misunderstanding 4. The softer the better
The soft heater surface armor metal is generally made of a special kind of copper. In addition, all processes are the same as other armor heaters. This kind of copper requires a lot from foreign countries every time, and the total market demand of soft heater is not big, so the general manufacturers are rarely willing to produce