What is the purpose of a feedwater heater?

The primary purpose of a feedwater heater is to increase the temperature of the water before it enters the boiler. This preheating process enhances the overall efficiency of the boiler system by reducing the amount of energy required to turn the feedwater into steam. When water is heated prior to entering the boiler, it allows for a more efficient heat exchange, resulting in less fuel consumption and improved thermal efficiency.

By elevating the feedwater temperature, the feedwater heater helps to minimize thermal shock on the boiler components, aids in maintaining a more stable operation, and can improve overall steam production rates. This is especially important in large-scale power plants where maximizing efficiency is critical for economic operation.

While there are aspects of water treatment and pressure regulation involved in boiler operations, the specific role of the feedwater heater directly relates to the increase in temperature of the feedwater, which is essential for effective boiler operation.