(A) Given a Fuel Cell Efficiency of 75% and a Required

question 4

Essay

(a) Given a fuel cell efficiency of 75% and a required energy to the wheels of $0.6 \mathrm { MJ } / \mathrm { km }$ , calculate the mass of hydrogen fuel required to give a vehicle a range of 300 $\mathrm { km }$ .
(b) Calculate the fuel volume if hydrogen is stored in the form of (i) liquid hydrogen, (ii) $\mathrm { CHG }$ at $50 \mathrm { MPa }$ , and (iii) $\mathrm { TiH } _ { 2 }$ .

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