A practical example of steady-state diffusion is the purification of hydrogen gas where one side of a thin sheet of palladium is exposed to impure gas containing hydrogen, nitrogen, oxygen, and water vapor. Hydrogen selectively diffuses through the sheet and exits the other side as purified hydrogen, while the other gaseous species do not penetrate the sheet noticeably. Compute the amount of hydrogen (in kilograms per hour) that passes through a 6- millimeter thick sheet of palladium with surface area equal to 0.25 m^2 at 600 degrees C. The diffusivity (or diffusion coefficient) of hydrogen in palladium is 1.7 *10^-8 m^2/s. The concentration on the high-pressure side is 2.0 kg of hydrogen per cubic meter of palladium, and is 0.4 (same units) on the low- pressure side.
A practical example of steady-state diffusion is the purification of hydrogen gas where one side of a thin sheet of palladium is exposed to impure gas containing hydrogen, nitrogen, oxygen, and water vapor. Hydrogen selectively diffuses through the sheet and exits the other side as purified hydrogen, while the other gaseous species do not penetrate the sheet noticeably. Compute the amount of hydrogen (in kilograms per hour) that passes through a 6- millimeter thick sheet of palladium with surface area equal to 0.25 m^2 at 600 degrees C. The diffusivity (or diffusion coefficient) of hydrogen in palladium is 1.7 *10^-8 m^2/s. The concentration on the high-pressure side is 2.0 kg of hydrogen per cubic meter of palladium, and is 0.4 (same units) on the low- pressure side.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A practical example of steady-state diffusion is the purification of hydrogen gas
where one side of a thin sheet of palladium is exposed to impure gas containing
hydrogen, nitrogen, oxygen, and water vapor. Hydrogen selectively diffuses
through the sheet and exits the other side as purified hydrogen, while the other
gaseous species do not penetrate the sheet noticeably.
Compute the amount of hydrogen (in kilograms per hour) that passes through a 6-
millimeter thick sheet of palladium with surface area equal to 0.25 m^2 at 600 degrees C.
The diffusivity (or diffusion coefficient) of hydrogen in palladium is
1.7 *10^-8 m^2/s. The concentration on the high-pressure side is 2.0 kg of
hydrogen per cubic meter of palladium, and is 0.4 (same units) on the low-
pressure side.
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