Podcast
Questions and Answers
Which of the following is true about natural gas for steam generation purposes?
Which of the following is true about natural gas for steam generation purposes?
- It requires high amounts of excess air for complete combustion.
- It is a mixture of several gases including methane, ethane, and propane.
- It contains ash which aids in combustion.
- It is usually processed before use. (correct)
Which of the following gases is typically removed from natural gas before combustion?
Which of the following gases is typically removed from natural gas before combustion?
- Methane
- Hydrogen sulfide (correct)
- Carbon dioxide
- Nitrogen
What is the typical range of heating value for natural gas?
What is the typical range of heating value for natural gas?
- 10,000 to 20,000 kj/kg
- 46,420 to 55,700 kj/kg (correct)
- 25,000 to 35,000 kj/kg
- 60,000 to 70,000 kj/kg
Based on the given information, what is the stoichiometric volume of oxygen required for the complete combustion of 1 m^3 of methane gas?
Based on the given information, what is the stoichiometric volume of oxygen required for the complete combustion of 1 m^3 of methane gas?
In the given example, if a boiler burns 50 m^3/h of methane gas at 10% excess air, what is the air flow supplied per hour?
In the given example, if a boiler burns 50 m^3/h of methane gas at 10% excess air, what is the air flow supplied per hour?
In one hour, how much volume of nitrogen gas is produced when a boiler burns 50 m^3/h of methane gas at 10% excess air?
In one hour, how much volume of nitrogen gas is produced when a boiler burns 50 m^3/h of methane gas at 10% excess air?
Which of the following is an advantage of natural gas as a fuel?
Which of the following is an advantage of natural gas as a fuel?
What is the disadvantage of natural gas mentioned in the text?
What is the disadvantage of natural gas mentioned in the text?
What is the mass of nitrogen in the combustion air if the mass of air containing 4 kg of oxygen is 17.24 kg?
What is the mass of nitrogen in the combustion air if the mass of air containing 4 kg of oxygen is 17.24 kg?
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?
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?
