Generally speaking, heaters are mainly divided into air heating and liquid heating from the perspective of heating medium. Both of them are widely used. The characteristics of the two are different, and the points of attention are also completely different.
Today I will tell you the characteristics of dry air heating:
The air heater is an electric heating device that mainly heats the gas flow. The heating element of the air heater is a stainless steel heating tube, and the inner cavity of the heater is equipped with multiple baffles (baffles) to guide the gas flow direction and extend the residence time of the gas in the inner cavity, so that the gas is fully heated and the gas is heated Uniformity, improve heat exchange efficiency. The stainless steel electric heating tube of the heating element of the air heater is made by inserting electric heating wire into the seamless steel tube, and the gap part is filled with magnesium oxide powder with good thermal conductivity and insulation. When the current passes through the high-temperature resistance wire, the heat generated is diffused to the surface of the heating tube through the crystalline magnesium oxide powder, and then transferred to the heated air to achieve the purpose of heating.
Technical characteristics of air heater:
1. It can heat the air to a very high temperature, up to 450°C, and the shell temperature is only about 50°C.
2. High efficiency: up to 0.9 or more.
3. The heating and cooling rate block can reach 10℃/S, and the adjustment is fast and stable. There will be no leading and lagging phenomenon of the controlled air temperature to make the temperature control drift indefinite, which is very suitable for automatic control.
4. Good mechanical properties: Because its heating element is made of special alloy material, it has better mechanical properties and strength than any heating element under the impact of high-pressure air flow. This is suitable for those who need to continuously heat the air for a long time. System and accessory tests are more advantageous.
5. When it does not violate the operating regulations, it is durable and has a service life of several decades.
6. Clean air and small size
