A boiler operating at 11 kg/cm2 is required to generate a minimum  of 50,000 kJ/hr of saturated steam. Feed water enters the boiler at 800C. Compute the fore coal at an average rate 4,800 kg/hr and boiler efficiency is 85%. Compute the minimum heating value of local coal that could be used in order to ensure the generation of required steam.

A. 28,464

B. 29,977

C. 23,556

D. 30,976

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