1. A BMW hydrogen car (BMW hydrogen 7) uses 2.5 kWh/km. a) Compare this performance with that of an average US car that

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1 A Bmw Hydrogen Car Bmw Hydrogen 7 Uses 2 5 Kwh Km A Compare This Performance With That Of An Average Us Car That 1 (126.56 KiB) Viewed 63 times

1. A BMW hydrogen car (BMW hydrogen 7) uses 2.5 kWh/km. a) Compare this performance with that of an average US car that is able to get 22 mpg of gasoline (hint: compare the energy required per km) (5 pts) b) Compare the overall consumption of the hydrogen car by assuming that hydrogen is produced from gasoline with efficiency n=50% (5 pts) c) From the US Department of Energy (DOE), it targets the use of Ig of Platinum per kW of car power. Considering that the BMW 7 has a power rating of 191 kW, estimate the platinum content per car assuming that the DOE specifications are met. Given that the yearly world production of platinum is 178.000 Kg. estimate how many BMW 7s can be manufactured per year? (5 pts) d) Comment on the sustainability of a hydrogen fuel cell car (e.g., economical, environmental, societal). (10 pts)