Combustion Gas Analysis Quiz
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Questions and Answers

Which gas component is the product of complete combustion?

  • Carbon monoxide (CO)
  • Nitrogen (N2)
  • Carbon dioxide (CO2) (correct)
  • Oxygen (O2)

    • What does the presence of carbon monoxide (CO) in the flue gas indicate?

  • Excess air
  • Incomplete combustion (correct)
  • Complete combustion
  • Proper fuel-air mixing

    • What does excess air in the flue gas indicate?

  • Complete combustion (correct)
  • Incomplete combustion
  • Excess fuel
  • Insufficient air

    • What is the most reliable method for combustion analysis?

    <p>Measuring oxygen (O2)</p> Signup and view all the answers

    Which components are measured in a flue gas analysis?

    <p>Oxygen (O2), carbon monoxide (CO), and carbon dioxide (CO2)</p> Signup and view all the answers

    Which of the following is the primary purpose of a flue gas analysis?

    <p>To analyze the efficiency and completeness of the combustion process</p> Signup and view all the answers

    Which units are commonly used to measure flue gas constituents?

    <p>Percent volume and parts per million (ppm)</p> Signup and view all the answers

    According to Table 13, what is the percentage of CO2 in the flue gas when the percentage of excess air is 30% for natural gas combustion?

    <p>15.4%</p> Signup and view all the answers

    In Example 23, what are the CO2 and O2 percentages by volume for a coal-fired plant with excess air calculated at 60%?

    <p>CO2 = 11.3% and O2 = 9.4%</p> Signup and view all the answers

    According to the formulas in the PanGlobal Academic Supplement, how is the theoretical air required to burn fuel calculated?

    <p>Air(kg/kgoffuel) = (C + N2 + O2 + S)/33(002 + CO)</p> Signup and view all the answers

    In Example 24, what is the percent of excess air that is used for a coal-fired boiler with the given analysis by mass and flue gas sample analysis?

    <p>20%</p> Signup and view all the answers

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