Types of materials for air duct electric heaters

Types of materials for air duct electric heaters

Wind duct electric heaters are very common in the production and operation activities of industrial enterprises. They are a commonly used electric heating device with small volume and high heating power, so they can be widely applied in research. So, what specific types do we need to know about them?

Explosion proof heaters can be divided into ceramic heaters, stainless steel heaters, etc. according to their materials.

The shell of the ceramic heater is made of stainless steel, and heat-resistant ceramics are added to the internal thermistor wire to prevent corrosion.

Characteristics of air duct electric heater

The temperature resistance wires of the internal pipeline heater are evenly distributed in the structure without fillers, and are filled with magnesium oxide powder in a crystalline state. When the current passing through the resistance wire heats the crystalline magnesium oxide powder and drifts outward to reach the heat of the adhesive, the heating purpose is achieved.

It can mainly be used to heat the air in the air duct, with specifications divided into three basic forms of low temperature, medium temperature, and high temperature environments. The common development in structure is the use of steel plates as support for the electric heating tube to reduce vibration of the electric heating tube and when the fan system stops. An over temperature control device is required to be installed in the junction box. The low-temperature type can be directly installed on the air duct, while the medium temperature and high-temperature types have insulation engineering materials sandwiched between the outer wall of the channel and the heater junction box due to their different economic structures. On the one hand, this can reduce the direct external heat dissipation of the entire network channel of the enterprise, and on the other hand, it also reduces the temperature inside the junction box.

The air duct electric heater is a very important heating equipment, but vibration can exacerbate the wear of the air heater pipes and baffles, affecting the use of the air heater. The air heater uses water as the heat transfer medium, and vibration can be transmitted through the liquid. The transmission of vibration in the liquid is difficult to predict, but the transmission of vibration in the liquid can cause significant damage to the air heater.

There are two types of liquid transportation through shaking, one is parallel to the flow direction of longitudinal vibration, and the other is perpendicular to the flow direction of transverse vibration, characterized in that the transverse vibration causes damage to many air heaters.

Www.superbheater.com