The exhaust gas energy is used to preheat the air required for combustion. Combustion requires up to 30% less fuel, resulting in direct cost savings.
EXAMPLE: Recuperator for air preheating
- Exhaust gas: 4885 Nm³/h, 1250 °C
- Air: 3150 Nm³/h, 410 °C
- Power: 600 kW
Recuperators are often placed downstream of the furnaces. The exhaust gases are used to preheat the air required for combustion. The energy is efficiently reused directly in the process.
- Combustion air preheating
- Air preheating for other heating processes
- Preheating of technical gases
- Drying processes (wood, pickling baths...)
- Air preheating
- Exhaust gas cooling