An induced draft fan is a mechanical device used to remove exhaust gases from industrial systems, creating negative pressure to ensure smooth airflow. Key components include impellers (for air movement), motors (to drive the fan), and housings (for directing airflow). Designed with cutting-edge technologies like computational fluid dynamics (CFD), these fans are often made of corrosion-resistant materials and coated for durability. Types include centrifugal and axial fans. Induced draft fans are critical in industries like power generation, cement manufacturing, and chemical processing, helping to enhance energy efficiency, reduce emissions, and maintain optimal system performance.