To reduce the stack loss, heat recovery from flue gas can be done by All of these Steam generation in waste heat boilers Preheating of cold stock Preheating of combustion air TRUE ANSWER : ? YOUR ANSWER : ?
Temperature of a furnace fired with low calorific value fuel gas (i.e. lean gas) can be increased by Oxygen enrichment of combustion air All of these Preheating the combustion air Preheating the fuel gas TRUE ANSWER : ? YOUR ANSWER : ?
Ceramic recuperators compared to metallic recuperators for the same duty Are lighter Have higher pressure differential between flue gas & air side Occupy more space Are less costly TRUE ANSWER : ? YOUR ANSWER : ?
Regenerators as compared to recuperators for the same duty Store smaller quantity of waste heat Involve higher initial cost All of these Are lighter & compact TRUE ANSWER : ? YOUR ANSWER : ?
Very high pressure boilers are usually __________ boilers. Water tube Waste heat Fire tube Natural circulation TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not a continuous waste heat recovery equipment from the flue gases going out of furnace? Regenerator Waste heat boiler Economiser Ceramic recuperator TRUE ANSWER : ? YOUR ANSWER : ?
Higher furnace temperature can not be achieved by use of a lean fuel gas in the furnace by Oxygen enrichment of combustion air Preheating the combustion air Preheating the fuel gas Increasing the draft in the furnace TRUE ANSWER : ? YOUR ANSWER : ?
Furnace pressure is normally controlled by regulating the Air pressure Speed of I.D. fan Damper Fuel gas pressure TRUE ANSWER : ? YOUR ANSWER : ?
Test specimen for determination of refractoriness under load (RUL) of a refractory is heated in a Furnace employing negative pressure Reducing atmosphere Carbon resistance furnace Furnace employing neutral atmosphere TRUE ANSWER : ? YOUR ANSWER : ?
Design of waste heat boiler for recovery of waste heat from furnace gases depends upon the All of these Dust concentration & nature of dust in waste gas Corrosive nature of the waste gas Quantity & temperature of waste gas TRUE ANSWER : ? YOUR ANSWER : ?