(Combustion Air Heat Recovery System)

Technical Description

BELLFABS BOILERS Air Pre-Heaters are high-efficiency waste heat recovery systems designed to recover residual heat from boiler flue gases and utilize it for preheating combustion air before entering the furnace. By increasing the temperature of incoming combustion air, the Air Pre-Heater improves fuel combustion efficiency, enhances thermal performance, and reduces overall fuel consumption.

The system is installed in the flue gas path between the boiler outlet and chimney, where hot exhaust gases transfer heat to fresh combustion air through specially designed heat transfer elements. Preheated air entering the furnace promotes faster ignition, improved fuel burnout, stable combustion, and reduced stack losses.

Air Pre-Heaters are widely used in coal fired, biomass fired, husk fired, briquette fired, thermic fluid heaters, FBC boilers, and high-capacity steam boiler systems to maximize energy recovery and improve overall plant efficiency.

Key Features

• Efficient waste heat recovery system
• Preheats combustion air using flue gas heat
• Improves combustion efficiency
• Reduces fuel consumption
• Improves fuel burnout and heat utilization
• Suitable for high-temperature operation
• Low maintenance operation

Advantages

• Increased boiler thermal efficiency
• Reduced operating and fuel cost
• Improved combustion performance
• Faster fuel ignition and complete combustion
• Reduced flue gas heat loss
• Better steam generation efficiency
• Lower environmental heat wastage
• Improved overall plant energy economy