Difference between water tube boiler and fire tube boiler

2018-10-24 14:36:19

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water tube boiler

A water tube boiler is a type of boiler in which water circulates in tubes heated externally by the fire. Fuel is burned inside the furnace, creating hot gas which heats water in the steam-generating tubes.

water tube boiler

water tube picture

fire-tube boiler

A fire-tube boiler is a type of boiler in which hot gases pass from a fire through one or (many) more tubes running through a sealed container of water. The heat of the gases is transferred through the walls of the tubes by thermal conduction, heating the water and ultimately creating steam.

fire tube boiler

fire tube boiler picture

Water Tube Boiler feature:

  • Water circulates in tubes and heated externally by hot gases. Fuel is burned inside the furnace. i.e (hot gases- outside the tubes and water- inside the tubes).
  • Operating pressure = upto 100 bar
  • Efficiency = upto 90%
  • Steam generation rate is high.
  • Operating cost is high.
  • Bursting risk is high.

Water treatment is necessary.

  • Best example from our daily life is Pressure cooker.
  • Famous water tube boilers are : Babcock & Wilcox boiler, Foster wheeler D-type boiler, Foster wheeler ESD type boiler etc.
  • Fire Tube/Smoke Tube Boiler feature:
  • Hot gases (products of combustion) pass through tubes, running through a sealed container of water i,e (hot gases- inside the tubes and water- outside the tubes). Also called as smoke tube boiler.
  • Operating pressure - limited to 16 bar.
  • Steam generation rate is lower.
  • Generally, internally fired.
  • Operating cost is low.
  • Bursting risk is less. Efficiency = upto 75%
  • Famous fire tube boilers are : Cochran boiler, Lancashire boiler, Scotch boiler etc.

Difference between water tube boiler and fire tube boiler:

Difference between water tube boiler and fire tube boiler

Difference between water tube boiler and fire tube boiler

HOT SALE

Boiler control panels

type
Control Box

capacity

pressure

fuel

Biogas hot water boiler

type
" D " type and double drums

capacity
4-90t/2.8-63 MW

pressure
≤3.82MPa

fuel
Biogas

LPG gas steam boiler

type
Double drum vertical style

capacity
4-90t/2.8-63 MW

pressure
≤3.82MPa

fuel
LPG,Liquefied Petroleum Gas

Power plant boiler

type
Oil gas fired power station boiler

capacity
20-130t/h

pressure
≤5.29MPa

fuel
Coke Oven Gas, Blast Furnace Gas, LPG, Biogas, Light Oil,etc.