Electric heater refers to the electrical appliance that uses electric energy to achieve the heating effect. It is small in size, high heating power, very widely used, using intelligent control mode, high temperature control accuracy, can be connected to the computer. Wide range of applications, long life, high reliability. The core of the heater principle is energy conversion, the most extensive is electricity into heat energy.
For example, electric heater, using metal in the alternating magnetic field to generate vortex and make itself heat absorption, is electric energy into light energy, such as solar water heater, absorption of solar radiation heat energy and solar energy (photoelectric effect) into thermal energy; biological energy is a biological energy stored in the form of chemical energy, it directly or indirectly from plant photosynthesis. In addition, there are energy conversion modes such as nuclear energy and wind energy, but they generally need to be converted into electricity for use.
1. Resistance heater heating is the most primitive, so the thermal efficiency is also the worst, usually the thermal efficiency is only about 70 percent, a lot of heat energy is distributed into the air.
2. Infrared heating is better than the resistance, but still a lot of heat into the air, but not the infrared itself into the air, but the heated object to emit the heat into the air.
3. When the electromagnetic heater is working, there is an insulation layer to wrap the heating object, and then the magnetic field through the insulation layer to directly heat the object itself, so the thermal efficiency is the highest almost no heat loss, its thermal efficiency is more than 95%. And because fly such as electromagnetic heater is heating object heating so there is no loss of heat transfer, the overall energy saving is under the same conditions resistance heating 30% -70%, infrared heating because its heating characteristics and electromagnetic heating detailed comparison, but the temperature calculation, under the same conditions should fly such as electromagnetic heating than infrared heating energy saving in more than 20%.
