Efficiency of the boiler is nothing but ratio of rate of energy absorption by water to form steam to rate of energy release by the combustion of fuel.
Boiler efficiency = ms*(h1-h2)/mf*CV
where,
ms = steam generation rate (kg/s)
mf = fuel burning rate (kg/s)
CV = calorific value of fuel
h1,h2 = enthalpy at entry and exit of the boiler
Efficiency of the boiler is nothing but ratio of rate of energy absorption by water to form steam to rate of energy release by the combustion of fuel.
Boiler efficiency = ms*(h1-h2)/mf*CV
where,
ms = steam generation rate (kg/s)
mf = fuel burning rate (kg/s)
CV = calorific value of fuel
h1,h2 = enthalpy at entry and exit of the boiler