Question

Energy density is energy per unit mass. Which sector would you expect to have the highest needs for high energy density fuels?

Answer 1

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❖ Boeing Jet

Mid-flight a Boeing 747 uses around 4 litres of jet fuel per second. Therefore given the energy density of jet fuel, approximately 35 MJ/litre, a Boeing 747 consumes energy at a rate of around 140 MW (million watts).