Indirect & Direct Fired Air Heaters
Compact design with high turbulence offers superior efficiency for industrial flue gas recovery.
Heating Process
Supply clean hot air up to 650°C (Indirect)
±1°CPLC Control
ZeroContamination
Our plate-type indirect hot air furnace integrates the combustion chamber and radiation heat transfer section, significantly outperforming traditional tubular heaters.
Capable of recovering clean hot air up to 650°C, it strictly isolates combustion exhaust from the heated air, ensuring zero contamination. Featuring multi-node thermal expansion compensation and precise PLC temperature control (±1°C), it is built for long, stable operational cycles.
Furnace Internal Structure
Frequently Asked Questions
What is the difference between direct and indirect hot air furnaces?
An indirect hot air furnace heats air through a heat exchanger wall, producing 100% clean hot air (up to 650°C) with zero combustion byproducts. A direct fired furnace mixes combustion gases with the process air, reaching up to 1200°C but with some combustion residues present.
How precise is the temperature control?
Our PLC-controlled systems maintain temperature accuracy within ±1°C of the setpoint, using multi-zone temperature sensors and proportional burner modulation.
What fuel types are supported?
Our hot air furnaces support natural gas, LPG, diesel, and biomass gas. Dual-fuel configurations are also available for operational flexibility.
What industries use industrial hot air furnaces?
Common applications include spray drying in food and chemical processing, paint curing in automotive manufacturing, textile drying, mineral processing, and pharmaceutical production.