Which of the following characteristics decides that the Lancashire boiler is a fire tube boiler?

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SSC JE Mechanical 16 Nov 2022 Shift 2 Official Paper
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  1. All around brick-work setting for the circulation of hot gases
  2. Use of two flue tubes through which flow of hot gases and water is kept around the tubes 
  3. Coal firing
  4. Horizontal erection

Answer (Detailed Solution Below)

Option 2 : Use of two flue tubes through which flow of hot gases and water is kept around the tubes 
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Detailed Solution

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Explanation:

Lancashire boiler: 

Horizontal drum - Natural draught - two tubes - Multi pass boiler - Low pressure boiler.

  • The Lancashire Boiler is the internal fire tube boiler in which flue gases are located in the tube and surrounded by water.
  • It is a type of shell and tube heat exchanger where the flue gases are flowing in the tubes and water flowing in the shell. The heat transfer from flue gases to the water is by convection mode. 

Application:

  • Used in tyre industries and sugar mills
  • Used in marine engine and locomotive system.

 

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