110 V Air Heater Industrial Heat Exchanger Recuperator Factory Electric Aluminum Heat Transfer Provided Industrial Machine FAN

Overview of duct air electric heaters

The electric air heater is an electric heating device which mainly heats the gas flow. The heating element of the gas electric heater is a stainless steel electric heating tube, and the internal cavity of the heater is equipped with multiple baffles (guide plates) to guide the flow of the gas and extend the retention time of the gas in the internal cavity, so as to fully heat the gas, make the gas evenly heated and improve the heat exchange efficiency. Gas heater heating element stainless steel heating tube, is in the seamless steel tube into the heating wire, the gap part is filled with good thermal conductivity and insulation of magnesium oxide powder after the shrink tube. When the current passes through the high temperature resistance wire, the generated heat is diffused to the surface of the heating tube through the crystalline magnesium oxide powder, and then transferred to the heated gas to achieve the purpose of heating.

How the duct heater works

Drawings of duct type electric air heater

Evenly distributed in the high temperature resistant stainless steel seamless tube of high temperature resistance wire, dense part in gap to fill in the performance of thermal conductivity and good insulation performance are the crystallization of magnesium oxide powder, this kind of structure not only advanced, high thermal efficiency, and even heating, when high temperature resistance wire in an electric current passes through the heat to the metal surface diffusion through crystallization of magnesium oxide powder, then passed to the heated gas or air to reach the purpose of heating.

The electric air heater is mainly used to heat the required gas flow from the initial temperature to the required gas temperature, up to 600℃. Has been widely used in aerospace, ordnance industry, chemical industry and universities and many scientific research and production laboratory. Especially suitable for automatic control temperature and high temperature combined system with large flow and accessories test. Gas heater can be used in a wide range: it can heat any gas, and the hot gas produced is dry, no moisture, no conduction, no combustion, no explosion, no chemical corrosion, no pollution, safe and reliable, and the heated space heats up quickly (controllable).

Picture of finned electric heating tube

Technical characteristics of duct heater

1. The gas can be heated to a very high temperature, up to 600℃, and the shell temperature is only about 50℃.

2. High efficiency: above 0.95.

3, heating and cooling rate block, up to 10℃/S, fast and stable adjustment. There will be no temperature advance and lag phenomenon of the controlled gas, which makes the temperature control drift, which is very suitable for automatic control

4, good mechanical performance: because its heating body is special alloy material, so under the impact of high pressure gas flow, it is better than any heating body mechanical performance and strength, which requires a long time continuous heating of the gas system and accessories test has more advantages.

5. It is durable and has a service life of several decades when not in violation of the service rules.

6. Clean gas and small volume.

Air heater application picture