Size recuperators and heat recovery units for industrial furnaces — thermal duty, LMTD, area required, flue gas heat recovery potential, and energy cost payback.
| Preheat Temp | Fuel Saving | Flue Temp |
|---|---|---|
| 150°C | ~8% | 700°C furnace |
| 250°C | ~15% | 900°C furnace |
| 350°C | ~22% | 1100°C furnace |
| 450°C | ~28% | 1200°C furnace |
| 600°C | ~35% | 1300°C furnace |
Approximate — varies by flue gas composition and excess air. Use calculator for accurate results.
Industrial furnaces lose 30–60% of their energy input through flue gas waste heat — the largest single energy loss in most heat treatment operations. A recuperator (air-to-air heat exchanger) captures some of this heat and uses it to preheat combustion air, directly reducing gas consumption. At current gas prices, a well-sized recuperator typically pays back within 18–30 months.
The heat exchanger calculator takes your furnace operating temperature, gas consumption, and flue gas exit temperature, then calculates the available heat recovery potential, required exchanger size, predicted preheat temperature, and estimated payback period. Bloor Engineering designs and supplies recuperators for industrial furnaces and can provide detailed quotations based on your specific process data.
Enter your furnace operating data and get fuel saving, exchanger sizing, and payback calculation in seconds.
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