FURNACE TECHNOLOGY QUIZ

__________ is an indirectly heated furnace.

Muffle furnace

Soaking pit

Reheating furnace

Open hearth furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

While the fuel fired furnace can be used upto a maximum temperature of about 1700°C, the electric furnace can be used upto a temperature of about __________ °C.

2000

6000

4500

3000

TRUE ANSWER : ?
YOUR ANSWER : ?

Ceramic recuperators (made of SiC) is economical, only when used for preheating combustion air above __________ °C.

250

650

1000

850

TRUE ANSWER : ?
YOUR ANSWER : ?

An example of shaft furnace is the

Soaking pit

Glass melting tank

L.D. converter

Blast furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a continuous waste heat recovery equipment from the flue gases going out of furnace?

Ceramic recuperator

Waste heat boiler

Economiser

Regenerator

TRUE ANSWER : ?
YOUR ANSWER : ?

Heat transfer rate to the stock/charge in the furnace does not depend upon the

Thickness of the stock

Use of waste heat recovery equipments

Emissivity of the refactory walls

Size of the furance

TRUE ANSWER : ?
YOUR ANSWER : ?

An improved and fuel efficient version of the pusher type reheating furnace is the __________ furnace.

Walking beam

Shaft

Rotary hearth

Tunnel

TRUE ANSWER : ?
YOUR ANSWER : ?

Thickness of stock does not affect the fuel economy of furnaces, if the material to be heated is of

Low emissivity

Neither A nor B

High thermal conductivity

Both A and B

TRUE ANSWER : ?
YOUR ANSWER : ?

Air filtration in a furnace

Increases the flue gas temperature

Reduces its thermal efficiency

Is indicated by flame sting out

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Rate of heat release in a furnace, which is the measure of heat intensity is defined as

Kcal/hr

None of these

Kcal/m³ combustion space

Kcal/hr/m³ combustion space

TRUE ANSWER : ?
YOUR ANSWER : ?

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