Along with drum level and steam flow, which signal is associated with the feedwater control system?

Along with drum level and steam flow, which signal is associated with the feedwater control system?

• A. Cooling flow signal
• B. Pressure signal
• C. Feed flow signal
• D. Return flow signal

Answer: (C)

The feedwater control system is primarily responsible for maintaining the appropriate level of water in the steam drum of a boiler. It needs to accurately track the amount of water being supplied to the boiler to ensure efficient operation and to prevent issues such as low water conditions that can lead to damage. The feed flow signal is crucial in this context because it indicates the rate at which water is being fed into the boiler. This information is vital for the system to adjust and maintain the desired drum level by calculating the total amount of water needed based on the steam flow and the current drum level. By integrating this feed flow signal with the other inputs—drum level and steam flow—the control system can effectively regulate and optimize feedwater supply, ensuring safe and efficient boiler operation. In contrast, the other signals, while important in their respective contexts (cooling flow, pressure, and return flow), do not directly contribute to the immediate management of feedwater supply like the feed flow signal does. Therefore, the feed flow signal is the correct association for the feedwater control system in this scenario.

The feedwater control system is primarily responsible for maintaining the appropriate level of water in the steam drum of a boiler. It needs to accurately track the amount of water being supplied to the boiler to ensure efficient operation and to prevent issues such as low water conditions that can lead to damage.

The feed flow signal is crucial in this context because it indicates the rate at which water is being fed into the boiler. This information is vital for the system to adjust and maintain the desired drum level by calculating the total amount of water needed based on the steam flow and the current drum level. By integrating this feed flow signal with the other inputs—drum level and steam flow—the control system can effectively regulate and optimize feedwater supply, ensuring safe and efficient boiler operation.

In contrast, the other signals, while important in their respective contexts (cooling flow, pressure, and return flow), do not directly contribute to the immediate management of feedwater supply like the feed flow signal does. Therefore, the feed flow signal is the correct association for the feedwater control system in this scenario.