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A large coal fired power plant has an efficiency of 45% and produces net 1,500 MW of electricity. Coal releases 25 000 kJ/kg as it burns so how much coal is used per hour

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abiolataiwo2015

Answer:

133.33 kg/s

Explanation:

Calculation for how much coal is used per hour

Using this formula

Coal used per hour=(Net MW of electricity*1,000 / Efficiency%* Released kJ/kg

Let plug in the formula

Coal used per hour=1,500 MW*1,000/0.45*25,000 kJ/kg

Coal used per hour=1,500,000/11,250kJ/kg

Coal used per hour=133.33 kg/s

Therefore how much coal is used per hour is 133.33 kg/s

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