Question

A power station delivers 25 MW of electrical power. How many tonnes of fuel oil would be needed by this station to deliver the 25 MW of power for 1 month of 30 days, assuming a conversion efficiency of 34%. (1 tonne of oil equivalent in energy = 4.2 X 10¹⁰ J, 1 tonne = 1,000 kg).

Answer 1

$Wt=\eta Q,$

$Q=qm,\implies$

$m=\frac{Wt}{\eta q}=4538~t.$