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topic 8791

Hydrogen Control for Enclosed Anodizing


I am looking for information to properly scale the ventilation rate for an enclosed aluminum anodize tank. The concern is buildup of hydrogen during processing. How do I determine the minimum flow to keep hydrogen below 10% of the Lower Explosive Limit?

G. C. Hannabarger
- Chula Vista, California, USA


Faraday's Law of Electrolysis should work here. Each Faraday of electricity (96,485 amp-seconds) should release one gram equivalent weight of hydrogen. Ted Mooney, Teds signature
Ted Mooney, P.E.
Pine Beach, New Jersey

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