Thursday 28 August 2014

Having More fineness in coal...wat will happen....

Q. Having More fineness in coal...wat will happen....

Ans. If u have more fins in coal it's waste of fuel and ur super heat temp will increase.




  •  Increase because the fins will go and burns at the superheater place



  • Unburnt increases and furnace temperature also increase




  • temp wll be increased nd obivisly effcincy wll be increases bcz unburnt particl reducs




  • furnace temperatures increase cause super heater tube more heated cause tube puncher nd SH Steam temperature rise rapiddly



  • Boiler efficiency will decreases , difficult to maintain main steam temperature and super heater coils get over heat



  • furnace temp will rise, eventually superheater temp also rise... loss of fuel... exit temp of flue had will increase..



  • Super heater temp. Increases. And if you not decrease air flow LOI is more

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