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Natural, Forced and Balanced Draft

How furnace pressure is created and controlled with chimneys, FD fans and ID fans.

Indian Boiler Course presents this topic in a plant-oriented, examination-ready format. The lesson combines principles, construction, operation, safety, inspection points, troubleshooting and revision questions.

Overview

How furnace pressure is created and controlled with chimneys, FD fans and ID fans.

Why It Matters

This topic affects efficiency, reliability, safety and examination performance. Relate the concept to actual indications, operator actions and inspection evidence.

Key Takeaways

  • Understand the physical mechanism.
  • Recognise early warning signs.
  • Know the approved preventive controls.
  • Support answers with a simple diagram or calculation.