- Furnace air recirculation
- Incinerators
- Waste heat recycle
- Glass furnaces
- Homogenizing
- Float furnaces
- Preheating
- Drying
- Ceramic furnaces
- Curing
- Annealing
- Heat treating
- Oven air recirculation
- Bake-off oven
- Carburizing
- Thermal treatment
- Oxidizing
- Heat recovery
- Energy-from-waste
- Mineral processing
- Aluminum scrap recovery
- Metal smelting
- Fuel cell gas circulation
- Brick furnaces