High Efficiency Air Duct heater for Mining Heating
Product Introduction
The air duct heater is an electric heating device designed for heating gas (air, nitrogen, steam, etc.). It uses high-quality alloy electric heating tubes as core components and combines the optimized design of the duct structure. It has the characteristics of high-efficiency heat transfer, low heat, and long life. It is suitable for industrial pipelines, ventilation systems and other fields that require rapid heat preservation and precise temperature control.
Working principle
Air duct heater is mainly used for air heating in the duct, specifications are divided into low temperature, medium temperature, high temperature three forms, the common place in the structure is the use of steel plate to support the electric pipe to reduce the vibration of the electric pipe, the junction box is equipped with overtemperature control device. In addition to the control of the overtemperature protection, but also installed between the fan and the heater, to ensure that the electric heater must be started after the fan, before and after the heater added a differential pressure device, in case of fan failure, the channel heater heating gas pressure generally should not exceed 0.3Kg/cm2, if you need to exceed the above pressure, please choose the circulating electric heater; Low temperature heater gas heating higher temperature does not exceed 160℃; Medium temperature type does not exceed 260℃; High temperature type does not exceed 500℃.

Technical Parameters
Parameters Specification range
Power 1kW~1000kW (customized)
Temperature control accuracy ±1℃~±5℃ (higher accuracy optional)
Maximum operating temperature ≤300℃
Power supply voltage 380V/3N~/50Hz (customized other voltages)
Protection level IP65 (dustproof and waterproof)
Material Stainless steel heating tube + ceramic fiber insulation layer
Technical Date Sheet
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Product details display
Composed of electric heating elements, centrifugal fan, air duct system, control system, and safety protection
1. Electric heating element: core heating component, common materials: stainless steel, nickel chromium alloy, power density is usually 1-5 W/cm ².
2. Centrifugal fan: drives air flow, with an air volume range of 500~50000 m ³/h, selected according to the volume of the drying room.
3. Air duct system: Insulated air ducts (material: stainless steel plate+aluminum silicate cotton, temperature resistant to 0-400 ° C) to ensure efficient heat transfer.
4. Control system: contactor control cabinet/solid-state control cabinet/thyristor control cabinet, supporting multi-stage temperature control and alarm protection (over temperature, lack of air, overcurrent).
5. Safety protection: Overheating protection switch, explosion-proof design (Ex d IIB T4, suitable for flammable environments).


Product Advantage
1. High efficiency and energy saving
- High-density ceramic fiber insulation layer is used to reduce heat loss, and the thermal efficiency is as high as 95%.
- Intelligent temperature control system (PID algorithm) dynamically adjusts power to avoid energy waste.
2. Rapid heating
- Instant heating, the set temperature can be reached within 30 minutes (up to 300℃).
- Multi-stage heating design to meet different temperature rise requirements.
3. Safe and reliable
- Built-in overheating protection, leakage protection and circuit breaker automatic cut-off function.
- Fully enclosed structure design, explosion-proof and moisture-proof, suitable for flammable and explosive environments.
4. Flexible installation
- Standardized flange interface, compatible with existing pipeline systems, can be integrated without modification.
- Lightweight modular design, space saving, easy installation and maintenance.
Application Scenario

Customer use case
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Certificate and qualification


Customer Evaluation

Product packaging and transportation
Equipment packaging
1) Packing in imported wooden cases
2) The tray can be customized according to customer needs
Transport of goods
1) Express (sample order) or sea (bulk order)
2) Global shipping services


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