How to choose a suitable duct air heater

A duct-type air heater primarily consists of an electric heating tube, an inner tube, insulation, an outer shell, a wiring cavity, and an electronic control system. Its operating principle is as follows: cold air enters the inner tube of the duct heater from the inlet, where it comes into contact with the electric heating rods through the action of a deflector. Once the air reaches the specified temperature, monitored by the outlet temperature measurement system, it flows out through the outlet to the designated pipeline system.

The appropriate heating equipment material can be selected based on the type of heated gas and the heating temperature. The power and shape can also be customized based on actual site requirements. The gas pressure also determines whether a pressure vessel should be used as the heater's tube. The heater's protection level and explosion-proof performance should also be determined based on the heater's intended location.

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Ducted air heaters offer the following advantages:

1. Excellent mechanical properties, with mechanical strength capable of withstanding the impact of high-pressure airflow and adapting to long-term continuous operation;

2. Customizable design based on the user's site requirements;

3. Comprehensive electronic control system with pressure protection, over-temperature alarm, and dry-burn prevention;

4. Accurate temperature control: High temperature control accuracy, minimal error, rapid temperature rise and fall, and a smooth and stable temperature rise curve.