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Fuels and Combustion

Which of the following is the most important deterrents to an extended use of pulverised coal in boiler firing ?

Fuels and Combustion /
Which of the following is the most important deterrents to an extended use of pulverised coal in boiler firing ?

A. Ash disposal problem
B. Excessive fly-ash discharge from the stack
C. High power consumption in its transportation
D. Erosion of induced draft fan blades

Which of the following is the most important deterrents to an extended use of pulverised coal in boiler firing ? Read More »

Fuels and Combustion

The calorific value of a gas of composition CO2 = 20%, H2 = 50%, CH4 = 30%, is y. If the composition of gas is changed to H2 = 50%, CH4 = 30%, CO2 = 10%, N2 = 10%, then the calorific value will be___________________?

Fuels and Combustion /
The calorific value of a gas of composition CO2 = 20%, H2 = 50%, CH4 = 30%, is y. If the composition of gas is changed to H2 = 50%, CH4 = 30%, CO2 = 10%, N2 = 10%, then the calorific value will be___________________?

A. y
B. 0.95 y
C. 1.05 y
D. 1.8 y

The calorific value of a gas of composition CO2 = 20%, H2 = 50%, CH4 = 30%, is y. If the composition of gas is changed to H2 = 50%, CH4 = 30%, CO2 = 10%, N2 = 10%, then the calorific value will be___________________? Read More »

Fuels and Combustion