Question

In: Mechanical Engineering

why would one choose a fire tube boiler instead of a water tube boiler

why would one choose a fire tube boiler instead of a water tube boiler

Solutions

Expert Solution

In Fire-tube boilers, hot fulue gases pass through tubes and water surrounds them. Under the following conditions, Fire-tube boilers are chosed instead of water tube boilers.

  • The working pressures are low upto 20 bar.
  • For process industry, Fire-tube boilers are selected. It is not suitable for power generation since the rate of steam are very low, therefore, not suitable for power generation.
  • The treatment of feed water is not very essential as overheating due to scale formation cannot burst thick shell.
  • Even less skill operators are sufficeint for efficient operation.
  • The overall efficiency is upto 75% which is less than efficiency of water tube boilers.
  • If the floor area is large, the fire-tube boilers are chosed since it occupies more floor area.
  • The fire-tube boilers are simple in design, easy to erect and low maintenance cost.

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