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Natural Gas Properties and Combustion Quiz

10 Questions

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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?

It is free of ash Signup and view all the answers

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

Methane (CH4) Signup and view all the answers

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

46,420 to 55,700 kJ/kg Signup and view all the answers

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

Natural gas does not require extensive handling equipment. Signup and view all the answers

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

CH4 + 2O2 -> CO2 + 2H2O Signup and view all the answers

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

17.24 kg air/kg fuel 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?

19.7% Signup and view all the answers