Air Duct Electric Heater

An Overview of Duct-Type Electric Heaters:

Air duct heaters are primarily used for heating air within ducts, available in three temperature specifications: low, medium, and high. Their common structural feature is the use of steel plates to support the electric heating tubes to minimize vibration, and all junction boxes are equipped with over-temperature control devices. Additionally, for ease of control, apart from over-temperature protection, a parallel operation device must be installed between the fan and the heater to ensure that the electric heater starts after the fan. A differential pressure device should be added before and after the heater to prevent fan failure. The gas pressure heated by the duct heater should generally not exceed 0.3 Kg/cm2. If the pressure specification exceeds this, please choose a circulating electric heater. The high-temperature limit for low-temperature models is not over 160℃; for medium-temperature models, not over 260℃; and for high-temperature models, not over 500℃.

Section II: Applications of Duct-Type Electric Heaters:

Air electric heaters are primarily used to heat the required airflow from an initial temperature to the desired air temperature, up to a maximum of 850°C. They are widely applied in aerospace, arms industry, chemical industry, and many scientific research and production laboratories in colleges and universities. Particularly suitable for automatic temperature control and high-flow high-temperature combined systems and component testing. The range of air electric heaters is broad: they can heat any gas, producing dry, moisture-free, non-conductive, non-flammable, non-explosive, non-corrosive, non-polluting, safe and reliable heat, with quick heating of the heated space (可控).

III. Technical Features of the Duct-Type Electric Heater:

1. Capable of heating air to very high temperatures, up to 450°C, with the housing temperature around 50°C.

2. High Efficiency: Over 0.9.

3. Fast heating and cooling rates up to 10℃/s, quick and stable adjustment. No temperature control drift due to premature or lagging air temperature control, ideal for automatic control.

4. Excellent mechanical properties: Due to its heating element being made of a special alloy material, it exhibits superior mechanical properties and strength compared to any other heating element under the impact of high-pressure air flow. This is particularly advantageous for systems and accessories that require continuous and uninterrupted air heating over extended periods.

5. Durable and long-lasting, with a lifespan of up to several decades when used in accordance with operating procedures.

6. Clean air, compact size.

7. Custom designs of various types of air electric heaters are available to meet customer needs.

Section 4: Specifications and Model Numbers of Duct-Type Electric Heaters

Five. Airtight electrical heating element explosion-proof grade: ExdⅡBT1-6 ExdⅡCT1-6

Single-unit power range from 2KW to 10,000KW series.