Reconsider Prob. 14–85. Using the EES (or other) software, evaluate the hydrogen concentration with varying time and distance from the wall surface. By varying the elapsed time for 0 ≤ t ≤ 150,000 s, for x = 0.5, 1.0 and 2.0 mm, plot the hydrogen concentration ratio, C_A(x,t)/C_A,s, as a function of the elapsed time.

Data from in problem 14-85.

A thick nickel wall is exposed to pure hydrogen gas at 165°C on one side of its surface. The hydrogen concentration at the wall surface is constant. Determine the hydrogen concentration at the penetration depth in percentage of its concentration at the wall surface.

Transcribed Image Text:

Hydrogen gas 0 I diff FIGURE P14-85 Nickel wall X