Product Description
Electric Duct heaters are a type of industrial electric heating equipment primarily used in industrial ducts, air conditioning systems, and similar applications. They regulate air temperature by heating the airflow and can meet low-temperature (≤160°C), medium-temperature (≤260°C), and high-temperature (≤500°C) requirements, with some models capable of reaching up to 850°C.
The core structure consists of stainless steel heating elements, corrugated heat dissipation strips, and carbon steel/stainless steel brackets, featuring high thermal efficiency, low air resistance, and uniform heating.
The unit is equipped with built-in over-temperature protection, differential pressure monitoring, and a dual-temperature control system. It supports rapid and precise temperature adjustment at a rate of 10°C per second and can operate stably under a pressure of 0.3 kg/cm². Some designs incorporate thermal insulation pads to secure the heating elements and reduce vibration, while integrated circulation fans enhance heat exchange efficiency.
Technical Parameters
| Parameter |
Specification Range |
| Power Supply |
380V, 3 Phase, 50Hz (Voltage & frequency customizable) |
| Heating Medium |
Air |
| Working Temperature |
RT+30°C to 600°C |
| Control Accuracy |
± 1°C |
| Heating Method |
Electric heating |
| Temperature Control |
Meter control or PLC control |
| Safety Protection |
Over Temperature Alarm, Automatic Interlock Protection |
| Color |
Customizable |
Key Features
★All welded construction
★Quite easy to mount
★Terminal enclosures available for easy wiring
★Functional test of system prior to shipment
★Highly customizable to meet specifications
★Type selectable: Tubular or Finned Tubular Heating Elements
Applications
●Non-pressurized air-heating
●Forced Air Heating
●Air preheating
Control System
⚙Digital temperature controller
⚙SSR or SCR power controllers
⚙Heat ON/OFF switch
⚙Audible and visible alarm indicators
⚙Control Accuracy: ±1°C
⚙3～3000KW input power supply support
⚙Temperature recorder (Optional)
⚙PLC with HMI touch panel (Optional)
⚙Programmable temperature controllers (Optional)
Frequently Asked Questions
What is the maximum temperature an electric duct heater can achieve?
Standard models cover low (≤160°C) to high (≤500°C) ranges, while specialized designs can reach up to 850°C.
What safety features are integrated into these heaters?
They include built-in over-temperature protection, differential pressure monitoring, automatic interlock protection, and audible/visible alarms.
Can the power supply be customized for different international standards?
Yes, while the standard is 380V 3-Phase, both voltage and frequency can be customized to meet specific power supply requirements.
What materials are used for the heating elements?
The heaters typically use stainless steel heating elements (tubular or finned) with corrugated heat dissipation strips for maximum efficiency.
How accurate is the temperature control system?
The system provides high precision with a control accuracy of ±1°C using SSR or SCR power controllers.
Are these heaters easy to install in existing ductwork?
Yes, they feature an all-welded construction designed for easy mounting and include terminal enclosures to simplify wiring.
