4 kg of fule a produce 60000 kj heat on burning hand fule b produce 84000 kj of heat on burning find the calorific value of each fule . which fule is more efficient and why
Answers
Mass of Both fuels = 4 kg
Heat produced by fuel A = 60,000 kj
Heat produced by fuel B = 84,000 kj
To find :-
Calorific value of each fuel
Which fuel is more efficient and why
Analysis :-
The calorific value of of a fuel is the amount of heat produced by buring 1 kg of the fuel
The fuel which has high calorific value is more efficient.
Therefore, after finding out the calorific value of each fuel, we can find out which fuel is more efficient.
Solution :-
\boxed{\text{Calorific Value = $\frac{Heat\: Produced}{Mass\:of\:fuel}$}}
Calorific Value =
Massoffuel
HeatProduced
Calorific Value of fuel A :
\begin{gathered}\rightarrow \frac{\cancel{60000}}{\cancel{4}} \\ \rightarrow 5000\:kj/kg \end{gathered}
→
4
60000
→5000kj/kg
Calorific Value of fuel B :
\begin{gathered}\rightarrow \frac{\cancel{84000}}{\cancel{4}} \\ \rightarrow 21000\:kj/kg\end{gathered}
→
4
84000
→21000kj/kg
______________________________________
Calorific Value of fuel B > Fuel A
\therefore∴ Fuel B is more efficient because it has more calorific value.
hope it helps you ☺️