Which of the following contributes to boiler efficiency?

The recovery of waste heat from flue gases is a crucial factor in enhancing boiler efficiency. When fuel is burned in a boiler, it produces not only steam but also flue gases that contain residual heat. By implementing heat recovery systems, such as economizers or heat exchangers, this waste heat can be captured and reused to preheat the incoming feed water or to generate additional steam. This process reduces the overall energy demand on the boiler, allowing for better utilization of fuel and lowering operational costs.

Improving boiler efficiency through heat recovery positively impacts plant performance by lowering emissions as less fuel is required to produce the same amount of steam or heat energy, making it not only economically beneficial but also environmentally friendly. Efficient waste heat recovery systems can significantly enhance the overall thermodynamic cycle of the boiler and, as a result, contribute to a more efficient steam generation process.