Undenominated Engineering Energy Q1) A) A driver completely fills her car's fuel tank, which has volume 45 litres, at a service station with fuel that has a heating value of 44.9 MJ/kg and density of 785 kg/m³. Assume that the driver has timed her fuelling to perfection so that the fuel tank is completely empty at the start of fuelling. Assume also that the flow rate of fuel into the tank is constant over the time of fuelling, which is 71 seconds. Calculate the average flow of chemical power in megawatts (MW) into the fuel tank during fuelling. B) A fuel with the composition of heptane (C7H16) is burned in an electricity-generating plant, with efficiency 46%. If the fuel has a specific energy of 42 MJ/kg, calculate CO2 emissions in units of kg/MJ electricity produced. C) A town burns 67,150 tonnes of natural gas each year primarily for heating. If natural gas can be approximated as methane (CH4), calculate the mass of CO2 emitted each year in tonnes
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First, let's calculate the mass of fuel added to the tank. We know the density of the fuel is 785 kg/m^3 and the volume of the tank is 45 liters. We can convert the volume to cubic meters: Volume = 45 liters = 45/1000 = 0.045 m^3 Mass of fuel = Density x Show more…
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