What is the main benefit of using an economizer in boiler systems?

The main benefit of using an economizer in boiler systems is that it improves boiler efficiency. An economizer is a heat exchanger that captures residual heat from the flue gases before they exit the stack. This recovered heat is then utilized to preheat the feedwater entering the boiler. By raising the temperature of the feedwater, less energy is required to convert it to steam, leading to reduced fuel consumption and lower operational costs. This efficiency enhancement not only results in energy savings but can also contribute to less wear and tear on the boiler system, potentially extending its operational lifespan.

While other factors such as noise levels, water flow, and maintenance requirements are important in the context of boiler operation, they are not the primary function of an economizer. The focus of an economizer is specifically on maximizing the thermal efficiency of the boiler, making that the most significant benefit.