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Working principle and performance analysis of air heater

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Working principle and performance analysis of air heater

Date:2017-08-18 Author:http://www.z-1.net.cn/ Click:

The air heater is the electric heating equipment which mainly heat the gas flow. The heating element of the air heater is the stainless steel electric heating tube. There are many baffles (deflector) in the inner cavity of the heater, which guides the gas flow direction and prolongs the gas residence time in the inner cavity, so that the gas is fully heated, so that the gas is heated uniformly, and the heat exchange efficiency is improved. Heating element: stainless steel tube air heater, electric heating wire is loaded in the seamless steel pipe, the void is filled with good heat conductivity and insulation of magnesium oxide powder after a pipe. When the current through the high temperature resistance wire, the surface of the heat pipe diffusion through the heating crystallization of magnesia powder, and then pass to the heated air, to achieve the purpose of heating.

The efficiency of the Chinese name air heater is up to 0.9

The heater is a pressure vessel, and at the same time to resist the oxidation of high temperature air, so the material must be made of stainless steel. The heating element of the air heater is a stainless steel electric heating tube. The inner cavity of the heater is set up with a number of baffles, which can prolong the retention time of air in the inner cavity of the heater so as to improve the efficiency of heat exchange. The heating time of the production line can be shortened by increasing the number of heating tubes and increasing the installed power of the air heater. The temperature control precision of the drafting air heater is higher and the temperature of drafting air is required to be within the range of + 1 C.

Air heater manufacturer

Working principle

A primary coil with a large number of turns and a secondary coil with less turn on the same iron core are installed. The voltage ratio of the input and output is equal to the ratio of the coil number, while the energy is kept constant. Therefore, the secondary coil produces large current under low voltage conditions. For induction heater, the bearing is a secondary coil with short circuit and single turn. Under the condition of low alternating voltage, large heat is generated, resulting in great heat. The heater itself and the yoke remain at normal temperature. Because the heating method can induce the current, the bearing will be magnetized. It is important to ensure that after bearing degaussing, make in the course of the operation will not attract metal chip, FAG induction heater has automatic degaussing function [1].

It is the use of metals to produce vortices in the alternating magnetic field to make themselves hot, usually in the heat treatment of metal. The principle is that when the thick metal is in the alternating magnetic field, the current is generated by the electromagnetic induction phenomenon. When thicker metal generates current, the current will form a spiral flow path inside the metal, so that the heat generated by the current flow will be absorbed by the metal itself, which will cause the metal to rise rapidly.

Uniform distribution of high temperature resistance wire in high temperature stainless steel seamless tube, dense in the void fill in the thermal conductivity and crystallization of magnesium oxide powder properties have good insulation, this structure is not only advanced, high thermal efficiency, and uniform heating, when the high temperature resistance wire in a current passes through the heat generated by the surface diffusion to the metal tube crystal magnesia powder, and then pass to the heating or air to achieve the purpose of heating.

Heating core manufacturer

Air electric heaters are mainly used to heat the required air flow from the initial temperature to the required air temperature, up to 850 degrees centigrade.

In general, the air heater is actually used to heat the air flow we need from the initial temperature to the required air temperature, and the highest temperature can be heated to 850 degrees. The air heater is mainly composed of an electric heating tube, a heat exchange chamber, a deflector, and a flange, a connecting tube, a temperature sensor and a whole support and shell, etc., which are connected to the heat exchanger cabin.

The heating gas enters the heat exchanger chamber of the heater through the intake port through the air inlet or the intake valve, and is heated through the heating pipe and fully heat transfer in the heat exchanger cabin to reach the required temperature, and then comes out from the outlet. An air outlet is provided with a temperature sensor, the temperature signal is collected and passed to the control system, the power output of the heater control system, to achieve automatic control of the temperature, the temperature sensor is also equipped with the heat transfer in the cabin, the main role is to monitor the temperature of the heating pipe, heating pipe or when over temperature exceeds the set temperature range, then will automatically cut off the power supply of the heater, the heating is stopped. The air is heated at this time.




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Tel: 0514-88603099 / 8860 0333 / 88600999

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