Advantages of Water Tube Boiler
There are many advantages of water tube boiler due to which these types of boiler are essentially used in large thermal power station.
1) Larger heating surface can be achieved by using more numbers of water tubes.
2) Due to convectional flow, movement of water is much faster than that of fire tube boiler, hence rate of heat transfer is high which results into higher efficiency.
3) Very high pressure in order of 140 kg/cm2 can be obtained smoothly.
Disadvatages of water tube boiler
1) Lower reserve of water means a more efficient water level control is required
2) High quality feed required
3) little allowance to corrosion