Natural Gas Properties and Combustion Quiz

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Questions and Answers

According to the given information, what is the stoichiometric volume of oxygen required for complete combustion of 1 m3 of methane?

  • 9.52 m3 (correct)
  • 1 m3
  • 2 m3
  • 7.52 m3

What is the theoretical air flow required for the combustion of 50 m3/h of methane gas?

  • 100 m3/h
  • 523.6 m3/h
  • 476 m3/h (correct)
  • 50 m3/h

How much nitrogen is present in the air flow supplied for the combustion of 50 m3/h of methane gas?

  • 376 m3/h
  • 100 m3/h
  • 7.52 m3/h (correct)
  • 50 m3/h

Which of the following is a desirable characteristic of natural gas for steam generation purposes?

<p>It is free of ash (B)</p> Signup and view all the answers

What is the main component of natural gas used for combustion?

<p>Methane (CH4) (C)</p> Signup and view all the answers

What is the typical range of heating value for natural gas?

<p>46,420 to 55,700 kJ/kg (D)</p> Signup and view all the answers

Which of the following is an advantage of natural gas as a fuel?

<p>Natural gas does not require extensive handling equipment. (A)</p> Signup and view all the answers

What is the combustion equation for natural gas assuming it is 100% methane?

<p>CH4 + 2O2 -&gt; CO2 + 2H2O (D)</p> Signup and view all the answers

What is the air-fuel ratio at 100% theoretical air for methane?

<p>17.24 kg air/kg fuel (D)</p> Signup and view all the answers

If a boiler uses 500 kg/h of methane and has an airflow of 10,320 kg/h, what is the percent of excess air?

<p>19.7% (D)</p> Signup and view all the answers

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