Question

Consider a fuel cell operating at 800∘C, 1 atm. In the cathode, humidified air is supplied with the mole fraction of water vapor equal to 0.1. If the fuel cell employs circular flow channels with a diameter of 1 mm, find the maximum velocity of air that can be used while still maintaining laminar flow. Compare your result to Example 5.2.

Answer 1

The maximum velocity that can be used while still maintaining laminar flow is

`V_(max) = \ 272 m/s`

Step-by-step explanation:

The explanation is shown on the first and second uploaded image