A. Economiser
B. Steam superheater
C. Air preheater
D. All A., B. and C.
A. Economiser
B. Regenerator
C. Ceramic recuperator
D. Waste heat boiler
A. Increase in calorific value of the fuel
B. Increase in flame temperature
C. Reduction in scale losses
D. Saving in fuel consumption
A. Blast furnace stoves
B. Blast furnace
C. Coke oven heating chamber
D. Rotary kilns
An example of a periodic furnace is the__________________? Read More »
Furnace Technology A. Size of the furnace
B. Gas velocity in furnace
C. Ratio of wall surface to surface of stock
D. None of these
Which of the following variables does not affect the furnace capacity ? Read More »
Furnace Technology A. Change in volume during a change of temperature
B. Difference in density between hot and cold gases
C. Furnace pressure in conjunction with draft in flues
D. All A., B. and C.
Circulation of gases in furnace is caused by the_________________? Read More »
Furnace Technology A. Increase in heating capacity/m2 of floor space
B. Elimination of cold spot at the bottom of the charge
C. Reduction in the temperature of furnace gases
D. Protection of the periphery of the charge from excessive radiation
Which is not accomplished in an underfired furnace ? Read More »
Furnace Technology A. Oxidation/scaling
B. Decarburising
C. Sulphur penetration
D. Either of the above
A. Store smaller quantity of waste heat
B. Are lighter & compact
C. Involve higher initial cost
D. All A., B. & C.
Regenerators as compared to recuperators for the same duty_________________? Read More »
Furnace Technology A. Before the I.D fan
B. After the I.D. fan
C. Near the top of the chimney
D. Anywhere after the I.D. fan
Dampers are located__________________? Read More »
Furnace Technology