What is the primary function of a feedwater pump in a boiler system?

The primary function of a feedwater pump in a boiler system is to supply feedwater to the boiler. This pump is critical in the boiler operation as it ensures that the boiler maintains a sufficient water level for safe and efficient operation. When water is heated in the boiler to produce steam, it creates pressure that can lead to a drop in water levels. The feedwater pump compensates for this by delivering fresh water to the boiler, replacing the water that has been converted to steam. This process is crucial in maintaining continuous operation and preventing issues such as overheating or damage to the boiler due to low water levels.

The other functions mentioned, like regulating boiler temperature or maintaining steam pressure, are important in the overall operation of a boiler but are not the primary role of the feedwater pump itself. The removal of waste gases is also handled by other components in the system, particularly the exhaust or flue gas systems, rather than by the feedwater pump. Thus, the main responsibility of the feedwater pump is to ensure a consistent supply of water into the boiler for steam generation.