What types of heaters are there? What is the difference between different types of heaters?

The weather is getting colder and colder, and people need some heaters to heat food or other things that need heating or insulation in their daily lives. For example, small sun for heating, induction cooker for cooking and other products. These products are all different kinds of heaters, and the heating methods used are also different. So what are the types of heaters? What is the difference between different types of heaters? Today, Bian Xiao found some information about the types of heaters. Let's have a look.

What types of heaters are there?

1. electromagnetic heating-electromagnetic heating refers to the alternating magnetic field generated by the components of the electronic circuit board. When an iron-containing container is placed on it, alternating magnetic field lines are cut on the surface of the container, and alternating current (eddy current) is generated in the metal part at the bottom of the container. The eddy current makes the iron atoms at the bottom of the container move irregularly at high speed, and the atoms collide with each other to generate heat energy. So as to achieve the effect of heating articles. Because the iron container itself generates heat, all the heat conversion rates are particularly high, up to 95%. Induction cookers and induction cookers use electromagnetic heating technology.

2. Infrared heating-The form of infrared heat transfer is radiation heat transfer, which transfers energy through electromagnetic waves. When far infrared rays shine on a heated object, some rays are reflected back and some are penetrated. When the emitted far infrared wavelength is consistent with the absorption wavelength of the heated object, the heated object absorbs the far infrared. At this time, the molecules and atoms in the object vibrate and rotate strongly, which makes the temperature of the object rise, thus achieving the purpose of heating.

3. Resistance heating-a heating method that uses electric current to release heat through an electric heater to heat the blank. ? Common resistance wire heating, ceramic heater, resistance coil heating and quartz tube heating all belong to resistance heating in principle.

What is the difference between different types of heaters?

1. The heating of the resistance heater is the most primitive, so the thermal efficiency is also the worst. Usually, the thermal efficiency is only about 70%, and a lot of heat energy is emitted into the air.

2. Infrared heating is better than resistance, but still? A lot of heat is emitted into the air, but what is emitted into the air is not the infrared itself, but the heat emitted into the air by the heated object.

3. When the electromagnetic heater works, the heated object is wrapped by the insulating layer, and then the magnetic field directly heats the object itself through the insulating layer, so the thermal efficiency is the highest, with almost no heat energy loss, and its thermal efficiency exceeds 95%. Moreover, because the electromagnetic heater itself generates heat, there is no heat transfer loss, and the overall energy saving is about 30%-70% of that of resistance heating under the same conditions. Infrared heater can't be compared with electromagnetic heating in detail because of its heating characteristics, but electromagnetic heating should save more than 20% energy than infrared heating under the same conditions. ? Oil tank plays a very important role in the process of oil and gas storage and transportation. In oil and gas storage, oil tanks are mostly used to store oil. When oil is needed, the oil is output from the oil tank. In the process of oil export, it is inevitable to encounter such problems. Because of the low temperature, the oil becomes viscous, which reduces the fluidity of the oil, resulting in the inability to smoothly export the oil from the oil tank. How to solve such a problem? According to reports, the new technology of local rapid heating of oil tank has solved this problem well.

The above is what Bian Xiao found for you about the types of heaters and the differences between different types of heaters. I believe that after reading Bian Xiao's introduction, you will definitely understand the types of heaters and the differences between different types. What Bian Xiao wants to say is that different types of heaters have different heating principles, different substances that generate heat, and some differences in heat release effects. Generally speaking, traditional heating methods such as resistance heating have the lowest heat utilization efficiency, and the newer heating methods, the higher the heat conversion rate. Do you agree?