It is estimated that many users have already understood the energy-saving principle of electromagnetic heaters. Some people are also puzzled. Is electromagnetic heating better than resistors? How high can the temperature rise? What is the heating speed? Below, you will see how incredible its heating speed is!
Firstly, to answer this question, it is necessary to explain the theory of electromagnetic heating. Usually, in resistance heating, the conduction method is used, which involves first applying a thermoelectric wire to a conduit (load) and exposing certain wires to external air radiation. Raise the surrounding temperature. Therefore, a large amount of heat is lost. The selection of induction cookers has a completely different heating principle. This is an eddy current method with a very high load, and its position thermal efficiency is as high as 95%. The resistance type uses conductive methods, and its heat generation is very low, only 60% of the power. Therefore, electromagnetic heaters can save more than 30% of electricity. I believe many people know this.
When the resistance wire is heated, some heat will be transferred to the cylinder, and this part of the heat will be lost to the air. In daily use, the loss of heat can even exceed 50%, which makes the thermal energy utilization rate of resistance heating low and leads to long heating time.
Electromagnetic heaters generate a magnetic field through high-temperature coils. The coil itself does not generate heat. It heats the barrel through eddy current induction and wraps it with insulation cotton to prevent heat loss, resulting in high heat utilization efficiency. In the case of a water granulator, the refrigeration unit can heat up to a temperature exceeding 400 degrees Celsius within 10 minutes. As for the high heating temperature, it depends on the material. Usually, after iron is heated to a red color, its temperature no longer increases. We usually operate at around 500-600 degrees. If you want to heat the temperature even higher. Then you must use another machine or change the material of the load (such as graphite steel pot), usually a temperature of 500-600 degrees Celsius is sufficient for plastic machines.
