Mechanical Engineering - Steam Boilers and Engines - Discussion


An air preheater is installed

[A]. before the economiser
[B]. before the superheater
[C]. between the economiser and chimney
[D]. none of these

Answer: Option C


No answer description available for this question.

Guru said: (Oct 17, 2014)  
Please tell me reason?

Cyril said: (Sep 7, 2016)  
So that exhaust air from the economizer will transfer its heat from to the air in the air preheater. The heated air in the air preheater is fed to the furnace. This will improve burning of fuel.

Rahul said: (Jun 8, 2019)  
I am not getting this, please explain the answer in detail.

Rishav said: (Jul 8, 2019)  
Exhaust air used in economiser first to pre-heat the feed water and then in pre-heater (placed between economiser and chimney) to pre-heat the air to be fed in the boiler.

Anil Hansda said: (Mar 13, 2020)  
Boiler_ preheater _economizer _air preheater_ chimney.

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