Podcast
Questions and Answers
Which of the following is NOT one of the main groups of coal classified by the American Society for Testing and Materials (ASTM)?
Which of the following is NOT one of the main groups of coal classified by the American Society for Testing and Materials (ASTM)?
- Lignite
- Anthracite
- Sub-bituminous (correct)
- Bituminous
What is the main difference between anthracite coal and bituminous coal?
What is the main difference between anthracite coal and bituminous coal?
- Anthracite coal has a lower heating value than bituminous coal.
- Bituminous coal has a higher ignition temperature than anthracite coal.
- Anthracite coal has a higher carbon content than bituminous coal.
- Bituminous coal has a higher percentage of volatile matter than anthracite coal. (correct)
Which type of coal is the largest group and tends to produce a sticky, cohesive mass when heated?
Which type of coal is the largest group and tends to produce a sticky, cohesive mass when heated?
- Lignite
- Anthracite
- Sub-bituminous
- Bituminous (correct)
Which type of coal is black in color, has high moisture content, and disintegrates when exposed to air?
Which type of coal is black in color, has high moisture content, and disintegrates when exposed to air?
What is the calorific value of Bituminous A coal in kilojoules per kilogram (kJ/kg)?
What is the calorific value of Bituminous A coal in kilojoules per kilogram (kJ/kg)?
Which type of coal has the highest volatile matter content?
Which type of coal has the highest volatile matter content?
What is the combustion equation for carbon?
What is the combustion equation for carbon?
According to the text, what is the equation for the combustion of hydrogen?
According to the text, what is the equation for the combustion of hydrogen?
What is the mass of dry flue gas produced per kilogram of fuel in Example 15?
What is the mass of dry flue gas produced per kilogram of fuel in Example 15?
What is the actual air supplied for the combustion of 1 kg of fuel in Example 15?
What is the actual air supplied for the combustion of 1 kg of fuel in Example 15?
What is the stoichiometric air required for the combustion of 1 kg of fuel in Example 15?
What is the stoichiometric air required for the combustion of 1 kg of fuel in Example 15?
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