Efficiency Improvement Opportunity in Boiler Without Changing GCV of the Coal

Boiler is a most useful device for any industry for process and production. It is very necessary to calculate the efficiency. There are basically two methods to calculate the efficiency of boiler, direct method and indirect method. Both the methods give different values as direct method does not consider any loses whereas indirect method gives the result by calculating all the losses. Efficiency for different GCV has been shown in this paper for AFBC boiler and this paper also gives the description of calculation of efficiency for AFBC and CFBC boiler for 4000kcal/kg gross calorific value of fuel.