(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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Definitions:

Short-Run

A period in which at least one factor of production is considered fixed, affecting the ability of businesses to change production levels.

Marginal Cost Curve

A graphical representation showing how the cost of producing one more unit of a good varies with the level of production.

Average Variable Cost

The total variable cost divided by the quantity of output produced, representing the cost of producing one more unit.

Marginal Cost Curve

A graphical representation showing how the cost of producing one more unit of a good changes as production increases.