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

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3. Gas Analyzers

3.0. Gas Analyzers for Power Plants

3.0.1. Gas analysis requirements and types

1. Basics: In thermal power plants the chemical energy of fuel is converted to the thermal energy of steam, which is converted to kinetic energy in turbines acting as prime movers to generate electrical energy. Overall conversion percentage efficiencies in power plants include: subcritical 30-40, supercritical (SC) 40–45, and ultra supercritical (USC) ∼50.
    By utilizing various techniques such as using oxy-fuel technology, SC/USC plants with IGCC 55%efficiency is achievable (see Figure V/3.0.1.2-1). All of these technological developments also help to lessen pollution due to CO2, NOX, etc., to a great extent (in oxy-fuel technology NOX emission is almost ...

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