Consider diffusion of hydrogen through a poly(dimethyl siloxane) (PDMSO) sheet 20 mm thick. If the permeability coefficient at 350 K is 1.31 x 10-10 [(cm STP)(cm)/(cm2-s- Pa)], compute the diffusion flux [(cm STP)/(cm2-s)) at 500 K. The hydrogen pressures at the two faces are 10 kPa and 1 kPa, which are maintained constant. Hint: Pw is the temperature independent coefficient i.e. it's the same for all temperatures. Use PM = PMo (- Qp / RT), Qp = 13.7 kJ/mol and R = 8.31 J/mol-K
Consider diffusion of hydrogen through a poly(dimethyl siloxane) (PDMSO) sheet 20 mm thick. If the permeability coefficient at 350 K is 1.31 x 10-10 [(cm STP)(cm)/(cm2-s- Pa)], compute the diffusion flux [(cm STP)/(cm2-s)) at 500 K. The hydrogen pressures at the two faces are 10 kPa and 1 kPa, which are maintained constant. Hint: Pw is the temperature independent coefficient i.e. it's the same for all temperatures. Use PM = PMo (- Qp / RT), Qp = 13.7 kJ/mol and R = 8.31 J/mol-K
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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Consider diffusion of hydrogen through a poly(dimethyl siloxane) (PDMSO) sheet 20 mm thick. If the permeability coefficient at 350 K is 1.31 x 10-10 [(cm STP)(cm)/(cm2-s- Pa)], compute the diffusion flux [(cm STP)/(cm2-s)) at 500 K. The hydrogen pressures at the two faces are 10 kPa and 1 kPa, which are maintained constant. Hint: Pw is the temperature independent coefficient i.e. it's the same for all temperatures. Use PM = PMo (- Qp / RT), Qp = 13.7 kJ/mol and R = 8.31 J/mol-K
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