Economiser in Boiler

An economiser is a heat exchanger device that is installed in a boiler to recover the waste heat from the flue gases and transfer it to the incoming feedwater. This device is primarily used to increase the boiler system's thermal efficiency and reduce fuel consumption. The following points explain why economiser is installed in a boiler.

Reducing Fuel Consumption

An economiser is installed in a boiler to reduce fuel consumption. The heat energy present in the flue gases is transferred to the incoming feedwater before it enters the boiler. This process preheats the water and reduces the amount of heat energy required to raise the water temperature to the boiling point. As a result, the boiler system can operate with less fuel, thereby reducing fuel consumption.

Increasing Thermal Efficiency

The economiser increases the thermal efficiency of a boiler system by recovering the waste heat from the flue gases and transferring it to the incoming feedwater. This process preheats the water and reduces the amount of heat energy required to raise the water temperature to the boiling point. As a result, the boiler system can generate more steam for the same amount of fuel, thereby increasing the thermal efficiency of the system.

Reducing Environmental Impact

By reducing fuel consumption, an economiser reduces the environmental impact of a boiler system. The reduced fuel consumption results in fewer emissions and less pollution. This makes the boiler system more environmentally friendly and helps to reduce the carbon footprint of the facility.

Conclusion

In conclusion, an economiser is installed in a boiler primarily to reduce fuel consumption and increase thermal efficiency. By recovering the waste heat from the flue gases and transferring it to the incoming feedwater, an economiser preheats the water and reduces the amount of heat energy required to raise the water temperature to the boiling point. This results in a more efficient and environmentally friendly boiler system.

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