A boiler having evaporative capacity 8 kg of steam per kg of fuel produces dry and saturated steam at 13 bar pressure. The feed water temperature is 35 C. Determine the calorific value of coal if the efficiency of the boiler is 70%.

A boiler having evaporative capacity 8 kg of steam per kg of fuel prod

1.	A boiler having evaporative capacity 8 kg of steam per kg of fuel produces dry and saturated steam at 13 bar pressure. The feed water temperature is 35 C. Determine the calorific value of coal if the efficiency of the boiler is 70%.
A.	35000 kJ/kg
B.	29560 kJ/kg
C.	31000 kJ/kg
D.	30160 kJ/kg
Answer» E.

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A boiler having evaporative capacity 8 kg of steam per kg of fuel produces dry and saturated steam at 13 bar pressure. The feed water temperature is 35 C. Determine the calorific value of coal if the efficiency of the boiler is 70%.

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