Explain the methodology for calibrating a fuel feeding system to achieve precise fuel delivery rates.

Calibrating a fuel feeding system is crucial to ensure precise fuel delivery rates and maintain stable and efficient boiler operation. The methodology involves establishing a relationship between the feeder's control signal (e.g., motor speed, valve position) and the actual fuel delivery rate. First, ensure the fuel feeding system is operating under normal conditions, with representative fuel being used. Check the fuel level in the hopper or feeder and verify that there are no obstructions or issues affecting the flow. Second, select several setpoints for the feeder's control signal across its operating r....