The purpose of the AIR PREHEATER is to recover the heat from the boiler flue gas which increases the thermal efficiency of the boiler by reducing the useful heat lost in the flue gas.
Advantages of Air Preheater
- Absorption of maximum waste heat from flue gases.
- Air preheaters increase the efficiency of the steam boiler by 2% to 3%
- Low payback time.
- Enhanced stability by using hot air.
- Proper combustion of poor-quality fuels.
- High heat transfer rate and low heat transfer area requirement.