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Write the De-merits of Natural Draught

written 6.0 years ago by teamques10 ★ 68k

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power plant engineering

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written 6.0 years ago by teamques10 ★ 68k

1. Maximum pressure available for producing draught by the chimney is less
2. Flue gases have to be discharged at higher temperature since draught increases with the increase in temperature of flue gases.
3. Heat cannot be extracted from the fluid gases for economizer, superheater, air pre-heater, etc. Since the effective draught will be reduced if the temperature of the flue gases is decreased.

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