The Description of an Modern Steam Boilers.Power stations are usually Coal fired and therefore as the demand for more power rises, so does the fuel cost, while the calorific value of the fuel is decreasing. The caloric value if the fuel is the oil content of the fuel decreases.However, in this new age generation pollution is a major concern therefore there are Stricter pollution regulations set in play to ensure the safety of our environment, and it is therefore necessary that boiler and turbine plants work efficiently.That question could therefore be asked what is a boiler?A boiler is a closed vessel in which water under pressure is transformed into steam this process is achieved by using heat.Can you say that all vessels that create steam are boilers?No, vessels that are open and vessels that create steam at atmospheric pressure is not defined as boilers.Does boilers work with fuel?Yes they are do work with fuel.How does boilers work / how does boilers convert fuel and how is steam made? The chemical energy in the fuel is converted into heat in the furnace and then the boiler then