Question

5kg of fuel a when burnt completely in presence of air produces 45000KJ of energy. Where as 10 kg of fuel B when is burnt produces 30000KJ of energy.
find the calorific value of mixture of fuel.

Answer 1

$$\begin{gathered} Calorificvalue=\frac{Heatofcombustion}{Mass} \\ Here,itsgivenasamixture.so \\ Calorificvalueofmixture=CalorificvalueofFuelA\hspace{0.17em}+CalorificvalueofFuelB \\ =\hspace{0.17em}\frac{45000}{5}+\frac{30000}{10} \\ =9000+3000=12000KJ/Kg \end{gathered}$$