A boiler produces 1000 kg/hr steam with rise in enthalpy of steam of 2500 kJ/kg. The calorific value of coal used is 30000 kJ/kg and its consumption is 100 kg/hr. What would be the boiler efficiency?

A boiler produces 1000 kg/hr steam with rise in enthalpy of steam of 2

1.	A boiler produces 1000 kg/hr steam with rise in enthalpy of steam of 2500 kJ/kg. The calorific value of coal used is 30000 kJ/kg and its consumption is 100 kg/hr. What would be the boiler efficiency?
A.	18.33%
B.	73.33%
C.	8.33%
D.	83.33%
Answer» E.