Engineering, 17.02.2020 21:21 cragajjar2

Consider a PEMFC operating at 0.8 A/cm2 and 70∘C. Hydrogen gas at 90∘C and 80% relative humidity is provided to the fuel cell at the rate of 8 A. The fuel cell area is 8 cm2 and the drag ratio of water molecules to hydrogen, α, is 0.8. Find the water activity of the hydrogen exhaust. Assume that p = 1atm and that the hydrogen exhaust exits at the fuel cell temperature, 70∘C.

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Consider a PEMFC operating at 0.8 A/cm2 and 70∘C. Hydrogen gas at 90∘C and 80% relative humidity is...