Furnace oil consumption in a furnace for a given duty employing preheated combination air (at 300°) may be reduced by about ______________ percent as compared to the use of atmospheric combustion air?

Related Mcqs:

The shift conversion reaction taking place during water gas manufacture is given by__________________?

A. C + H2O ↔ CO + H2 B. C + 2H2O ↔ CO2 + 2H2 C. CO + H2O ↔ CO2 + H2 D. None of these...

The main reason for making the copper calorimeter (used in bomb calorimeter) silvery white and shining/polished is to___________________?

A. Minimise its corrosion B. Avoid radiation heat loss C. Make it look attractive D. None of these...

A carbonaceous fuel (containing no H2 or hydrocarbons) is burnt and the resulting flue gas contains 21% CO2. It means that___________________?

A. 21% excess air has been used for combustion B. 21% excess oxygen has been used for combustion C. Complete combustion of fuel has taken place D. No excess air has been used for combustion...

Which of the following is not a by-product fuel ?

A. Pitch B. Blast furnace gas C. Petrol D. Refinery gas...

Preheating of combustion air is done to ___________________?

A. Increase the adiabatic flame temperature B. Increase the calorific value of the fuel C. Complete the combustion of fuel D. Reduce its requirement for effecting the complete combustion...