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Applying the Law of Diffusion to Automotive Lamp Venting
Technical Paper
1999-01-0697
ISSN: 0148-7191, e-ISSN: 2688-3627
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Language:
English
Abstract
Vented automotive lamps exchange moisture with the surroundings during steady state and transient conditions. An application of Fick's Law of Diffusion gives the mass transfer rate of a vapor A through a stagnant column of gas B for steady-state conditions. Automotive lamp ventilation is similar to this simplified problem given certain assumptions and where the vapor A represents moisture in the air at one end of the vent tube and the gas B is the air in or outside the lamp. This paper shows that the equimolar counter-diffusion problem, a solution for Fick's Law, has potential in reliably predicting humidity changes within an automotive lamp for static conditions.
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Authors
Citation
Bielecki, J. and Hoines, L., "Applying the Law of Diffusion to Automotive Lamp Venting," SAE Technical Paper 1999-01-0697, 1999, https://doi.org/10.4271/1999-01-0697.Also In
References
- Hoines L. Jiao J. “Environment Leading to Condensation in Automotive Lamps.” SAE Technical Paper 980316
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- Buttner H. Burckhardt W. “Benchmarking Evaluates and Improves System Performance - Limiting Condensation in Headlamps.” Hella Lighting Technology Research & Development Review 1995
- Incropera F. DeWitt D. Fundamentals of Heat and Mass Transfer 1990 950