The working principle of air duct heater:

The working principle of air duct heater:

The high temperature resistance wire is evenly distributed in the high temperature resistant stainless steel seamless tube, and the gap is densely filled with crystalline magnesium oxide powder with good thermal conductivity and insulation performance. This structure is not only advanced, high thermal efficiency, but also generates uniform heat. When there is an electric current in the wire, the heat generated is diffused to the surface of the metal pipe through the crystalline magnesium oxide powder, and then transferred to the heated part or air gas to achieve the purpose of heating.

The duct heater is mainly used to heat the required gas flow from the initial temperature to the required gas temperature. It is especially suitable for the test of automatic temperature control and large flow high temperature combined system and accessories. The air duct heater can be used in a wide range: it can heat any gas, and the hot gas produced is dry and moisture-free, non-conductive, non-combustible, non-explosive, non-chemically corrosive, reliable, and the heated space heats up quickly (controllable)

One of the characteristics of electric heating alloy material that is different from ordinary conductive materials is that it has certain requirements for the resistivity of the material. Ordinary conductive materials hope that the smaller the resistivity, the better, and the electric heating alloy material must have sufficient resistivity to ensure that the manufactured electric heating element has high electrothermal conversion efficiency, compact structure, and stable power transmission. Therefore, the resistivity of electric heating alloy materials must have the following characteristics.

It is a heating device that heats the gas, and can make the gas reach the temperature we need in a short time. The stainless steel heating tube is the heating element of the gas heater. It is made by filling the gaps with magnesium oxide powder with good insulation and thermal conductivity inside the stainless steel heating tube such as an electric heating wire. After being energized, the heating wire generates a large amount of heat and then diffuses to the surface of the heating tube after passing through the magnesium oxide powder crystal, and finally transmits it to the gas to be heated for heating.

The gas pipeline heater can heat the medium to a high temperature of up to 850, which is lower than the critical temperature of nitrogen, so there is no danger, and the control part adopts advanced digital circuits, integrated circuit triggers, high back pressure thyristors and other components. The temperature measurement and constant temperature system are adjusted to ensure the normal operation of the electric heater.

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