# engineering

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I need help with a Fire Science Engineering homework. A fuel has heat of combustion equal to 30 kj/g. How much energy is released when 5 kilograms are oxidized? Assuming the fuel is reacted in 10 minutes, what is the average heat release rate for the fire? This will be greatly appreciated. Thanks.

• engineering -

Assume enough oxygen supply all this time.

30 kj/g*(5*1000g)=150,000 kj
This happened in 10 minutes, or 600 sec.
So the heat release rate is 150,000/300
=500 kj/s

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