Chemical Engineering - Furnace Technology

Exercise :: Furnace Technology - Section 3

16. 

Artificial draught produced by a fan in the furnace can be controlled by the

A. speed of the fan.
B. damper.
C. variation in the pitch of fan blades.
D. all (a), (b) and (c).

Answer: Option D

Explanation:

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17. 

Regenerators as compared to recuperators for the same duty

A. store smaller quantity of waste heat
B. are lighter & compact
C. involve higher initial cost
D. all (a), (b) & (c)

Answer: Option C

Explanation:

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18. 

Circulation of gases in furnace is caused by the

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).

Answer: Option D

Explanation:

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19. 

Furnace aerodynamics is related to the __________ in the furnace.

A. movement of gases
B. measurement of flue gas volume
C. temperature control
D. pressure adjustment

Answer: Option A

Explanation:

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20. 

If the flame is produced under the hearth and then sweeps up into the heating chamber, this is called a/an __________ furnace.

A. sidefired
B. underfired
C. covered
D. recirculating

Answer: Option B

Explanation:

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