Recover waste heat from high‑temperature exhaust flue gas, pre‑heat combustion air or process fresh air. Hot flue gas and cold air are fully separated without mixing. Custom material options: SS304, SS316L, heat‑resistant steel, titanium, Cu‑Ni alloy. Available in heat‑pipe type, finned‑tube type, plate‑fin type. Suitable for furnaces, boilers, RTO thermal oxidizer, drying process. Reduce fuel consumption and carbon emission.