What are the safety factors of the explosion-proof electric heaters and their purchasing skills?

With the explosion-proof electric heater in more and more places, when we buy, will inevitably be dazzled. In particular, a variety of parameters are uneven, and people without knowledge are not at all. Because of the safety of the explosion-proof electric heater, the heater manufacturers today talk about the safety factor of the explosion-proof electric heater.

Explosion-proof electric heater has a extraordinary role in all walks of life, he was the chemical materials used in the chemical industry heating pressure heating, some dry powder, chemical process and spray drying; heating hydrocarbons, including crude oil, heavy oil, fuel oil, lubricating oil, conducting oil and paraffin wax; process water and superheated steam molten salt, nitrogen (air) gas, water gas and so on for heating the heating fluid; due to the adoption of advanced explosion-proof structure, equipment can be widely applied to places in the explosion-proof chemical industry, petroleum, natural gas, offshore platforms, ships, mining etc.. The four places are required to use explosion-proof electric heaters to ensure the safety of the place.

In fact, everyone in the selection of explosion-proof electric heater, facing a large number of parameters, there is no need to panic. You can first record the parameters that often appear, and then look up the information to understand their meaning. Then according to the need to buy explosion-proof electric heater, specific selection of related products.

Electric heaters are divided into three categories according to the types of heating methods.

Infrared heating:

The form of infrared heat transfer is radiative heat transfer, which transfers energy by electromagnetic waves. When the far infrared rays irradiate the heated object, some of the rays are reflected back, and some of them are penetrated through. When the far infrared wavelength emission and absorption wavelength of uniform heating object when heated objects absorb far infrared, then moving molecules and atomic resonance, strong vibration, rotation and vibration and rotating the object temperature, reach the purpose of heating.

Electromagnetic heating:

The electromagnetic heating is through the electronic circuit board part produces alternating magnetic field, when the iron container is placed above the surface of the container is cut out, current and alternating alternating magnetic lines at the bottom of the container of metal part (i.e., eddy current eddy current) of the container base iron atom high speed random motion, atomic collision and friction heat. So that the effect of heating items. Because the iron container is self heating, all the heat conversion rate is very high, the maximum can reach 95%. At present, electromagnetic furnace and electromagnetic stove are the electromagnetic heating technology.

Resistance heating:

The heating method of the blank is heated by using the current through the heat of the electric heat body. The common resistance wire heating, the ceramic heater, and the resistance ring heating, the quartz tube heating, in principle all belong to the resistance type heating.