When our engineers design the industrial furnace, they want to accelerate the rate and efficient of heating. But before we decide the gross power we have to take all respects into consideration, such as the area of the chamber of furnace, furnace construction, productivity of furnace and so on. If the electric power is too low, there will be a big temperature difference between heating element and furnace. So the service life of heating element will be shortened. While the electric power is too high, it may cost too much time to reach certain temperature and productivity will be affected.
2. Surface loading of heating element
Surface loading (W) is the electric power per unit surface. With higher surface loading, more heat will be created thus less material will be used. But if surface loading is too high, the resistance wire's service life will be affected and even be oxidized or melted in short time.
"Heating Wire Calculation" on our website may help you to choose the right heating wire and size. And please read more about "Surface Area Loading" in another article on our website.