Water Walls in Boilers

Water Walls Tubes are tubes which run along the inner surface of the boiler.  The function of the water wall tubes is to transfer the heat of the furnace to the water which flows in them.

Water Wall Tubes are more efficient than water tubes which were used earlier.  Water wall tubes help to better capture the heat of the boiler.  Since they are located in the walls, they prevent the heat from leaving the boiler and improve its efficiency.  They also keep the boiler surroundings cooler.

The water Wall Tubes are connected to the steam drum by means of risers.