Indirect & Direct Fired Air Heaters

Compact design with high turbulence offers superior efficiency for industrial flue gas recovery.

Heating Process
Industrial indirect fired hot air furnace designed for clean heating processes by ZR Thermal Tech

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

Internal diagram showing the combustion chamber and radiation heat transfer section of an indirect hot air furnace loading="lazy">
Figure 1: Internal structure highlighting the isolation of combustion exhaust to guarantee clean hot air supply.