12 Questions
What is the function of draught in a boiler?
To force air to the fire and carry away gaseous products of combustion
What are the two main types of draught mentioned in the text?
Natural draught and artificial draught
How is natural draught obtained in a boiler system?
Through the use of a chimney
What does a chimney do in a boiler installation?
Produces the draught and carries combustion products upward
Why is proper combustion important in a boiler furnace?
To ensure efficient heat generation
In what ways can artificial draught be classified?
Stem jet and mechanical
What is the main reason for the draught produced by a chimney?
Density difference between hot gases inside the chimney and cold air outside
Why are the flue gases leaving a chimney hotter in a natural draught system compared to an artificial draught system?
Higher flue gas temperature leads to more heat carried away by flue gases
Which factor affects the efficiency of a chimney in terms of steam generation, according to the text?
Heat carried away by flue gases
What is one of the reasons for draught loss in a chimney, as mentioned in the text?
Frictional resistance offered by the flues
What is the condition for maximum discharge of a chimney, based on the text?
Relation between absolute temperature of chimney gases and outside air temperature
Why does draught loss occur near bends in the gas flow circuit, according to the text?
Frictional resistance
Test your knowledge on the types and functions of draught in a boiler, focusing on the importance of proper combustion through air supply. Learn about natural draught, chimney draught, and artificial draught in boiler systems.
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