O'Reilly logo

Power Plant Instrumentation and Control Handbook by Ajay Kumar Debnath, Swapan Basu

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

3. Air Flow Control

3.0. General

Air flow control, a very vital part of the combustion control system, generates the demand and ensures adequate air flow, which is required for complete combustion of fuels as requisitioned by the combustion control system for keeping the steam pressure at its desired value.

3.1. Objective

Air flow control is provided to supply the total air flow at the exact quantity that satisfies the demand of the fuel firing rate, considering the stoichiometric ratio (the chemically correct or perfect ideal air–fuel ratio) and “excess air” to some extent to guarantee complete combustion. The control loop discussed here actually computes total required air flow vis-à-vis mill-wise air flow demand; when the relevant PA flow is subtracted ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required