Combustion Gas Analysis Quiz
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Questions and Answers

Which gas component is measured in relation to combustion efficiency during flue gas analysis?

  • Carbon monoxide (CO)
  • Nitrogen (N2)
  • Carbon dioxide (CO2)
  • Oxygen (O2) (correct)
  • What is the primary purpose of flue gas analysis?

  • To measure the individual components of the flue gas
  • To analyze the combustion air
  • To determine the efficiency and completeness of the combustion process (correct)
  • To monitor stack emissions
  • Which unit is commonly used to measure flue gas constituents?

  • Atmospheric pressure
  • Parts per million (ppm)
  • Percent volume (correct)
  • Mole
  • Which component of the flue gas analysis indicates that the fuel is not burning completely?

    <p>Carbon monoxide (CO)</p> Signup and view all the answers

    To convert percent by volume to parts per million (ppm), you should:

    <p>Multiply by 10,000</p> Signup and view all the answers

    To convert parts per million (ppm) to percent by volume, you should:

    <p>Divide by 10,000</p> Signup and view all the answers

    What is 0.05% NO2 in parts per million (ppm)?

    <p>500 ppm</p> Signup and view all the answers

    According to Table 13, as the excess air increases, the flue gas CO^ decreases.

    <p>True</p> Signup and view all the answers

    What is the CO^ percentage in the flue gas for a coal-fired plant with excess air calculated at 30%?

    <p>12.2%</p> Signup and view all the answers

    What is the 0^ percentage in the flue gas for a coal-fired plant with excess air calculated at 40%?

    <p>5.2%</p> Signup and view all the answers

    What is the percentage of excess air used in a coal-fired boiler with the following flue gas composition: 002 = 10.4%, CO = 0.2%, 02 = 7.8%, and N2 = 81.6%?

    <p>80%</p> Signup and view all the answers

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