What is an electric heating tube? The working principle and function of an electric heating tube. An electric heating tube is an object that relies on electricity. Generally, our common electric heating tubes are composed of metal tube spiral resistance wires and crystalline magnesium oxide powder. The working principle of the electric heating tube is that the alloy heating wire inside is energized to generate heat, and the very compact magnesium oxide is filled in the tube and compressed to conduct heat to the electric heating tube body, thereby heating the water. There are many heating environments for electric heating tubes, let's take a look together below.
The working principle of various electric heating tubes:
1. There are also two ways of arc heating, namely direct heating and indirect heating. 2. The electric heating plate heated by the arc uses the effect of the arc to generate high temperature to heat the object that needs to be heated. 3. Infrared heating uses the principle of electromagnetic radiation heat transfer to heat the object in a direct manner, thereby avoiding the energy loss caused by the heating medium. 4. Induction heating mainly uses the heat effect formed by the induction current in the alternating electromagnetic field, which is what we usually call eddy current, to promote the conductor to generate heat. 5. The electric heating tube that uses resistance heating mainly converts electric energy into heat energy through the Joule effect generated by electric current, which has achieved the purpose of heating. Heating plates using resistance heating are divided into direct resistance heating and indirect resistance heating.
The function of the electric heating tube: The function of the electric heating tube is to heat objects or gases. The function of the electric heating tube can be used for both dry heating and liquid heating.
"dry burning". During dry burning, if there is a fan cycle, the power of our heating tube is generally set as: the ratio of the total length of the heating zone of the heating tube electric heating tube (unit: meter) to the power of the heating tube is 1:1.5, which is one meter For a long heating tube, in the case of dry burning and fan circulation, the most suitable power is 1500W; when dry burning, if there is no fan circulation, the power of our heating tube is generally set as: the heating of the single-head heating tube electric heating tube The ratio of the total length of the zone (unit: meter) to the power of the heating tube is 1:1, that is, for a one-meter length heating tube, in the case of dry burning and no fan circulation, the most suitable power is 1000W.
"heat liquid". When heating water or corrosive liquids, the power of the electric heating tube is set as: under normal circumstances, the ratio of the total length of the heating area of the electric heating tube (unit: meter) to the power of the electric heating tube is 1:2, that is, the length of one meter Electric heating tube, the power is suitable for 2000W, of course, in the case of boiling water, it can be up to 4000W, but the lower the power per meter, the longer the life; when heating oil, the power of the electric heating tube is set as: the heating area of the electric heating tube The maximum ratio of the total length (unit: meter) to the power of the electric heating tube is 1:2.5, that is, the electric heating tube with a length of one meter has a power of up to 2500W. For normal heating of heat transfer oil, we generally set the ratio to 1 :1 or 1:1.5 to reduce the speed of carbon formation and life.
There are five types of electric heating tubes:
1. According to the classification of the outlet mode, it can be divided into single-end electric heating tube and double-end electric heating tube.
2. According to the material classification, it can be divided into stainless steel electric heating tube, quartz electric heating tube, Teflon electric heating tube, titanium electric heating tube.
3. According to the shape classification, it can be divided into straight heating tube, U-shaped heating tube, L-shaped heating tube, W-shaped electric heating tube, finned electric heating tube, and special-shaped electric heating tube.
4. According to the classification of use, it can be divided into dry heating heating tube and water heating electric heating tube.
5. According to the classification of heating methods, it can be divided into resistance heating, induction heating, arc heating, electron beam heating, infrared heating, medium heating and so on.
The electric heating tube is also called a metal tubular electric heating element. Its structure is that the spring heating wire is uniformly distributed along the central axis of the tube. The gap between the heating wire and the metal sheath is filled and compacted with magnesium oxide powder with good insulation and thermal conductivity. The port is sealed with a sealing material, and the terminals at both ends of the tube are used for wiring. The sub-electric heating tube from the end connection has one end connection and two ends connection. What is today's electric heating tube? This is the working principle and function of electric heating tube. I hope to help everyone. The manufacturer has specialized in producing electric heating tubes, heating tubes, and heating tubes for decades. If you don’t understand or need relevant knowledge You can directly consult our customer service for purchasing electric heating tubes.