Which method can accurately calculation the steam boiler capacity? Hourly steam delivery method ,boiler power method,boiler thermal efficiency method, these three methods are usually used to estimate the steam boiler capacity.
The hourly steam delivery method refers to calculate the capacity of the purchased steam boiler based on the amount of steam generated per hour of the boiler combined with the demand for steam at the time of production.Such as,a textile mill needs 20 tons of steam per hour, and the boiler delivery efficiency is 95%. Then the factory needs to buy a steam boiler which capacity is 21 tons.
The power of a steam boiler, also known as the amount of evaporation, is the amount of water that is converted into steam per hour: t/h (T/h) or kg/h (kg/h). Of course, it can also be expressed in MW or kW.
The relationship between evaporation and power is:1T/h=1000kg/h=0.7MW=720kW=600,000 kcal/h=600Mcal/h.
Like, 35 ton CFB steam boiler means the boiler rated steam capacity is 35 ton per hour
=24.5MV means boiler power is 24.5
35 tons CFB steam boiler
The combustion of fuel generates heat and passes it to the water in the boiler. The effect of heat transfer is called thermal efficiency.
Boiler capacity = Burner capacity * efficiency
Example: efficiency = 92% & Burner capacity=11,000 KW
boiler capacity =11,000 kW * 0.92 ~=10,120 kW ~=14.5t/h