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Diffusion Limited Supercritical Water Oxidation (SCWO) in Microgravity Environments
Technical Paper
2006-01-2132
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Tests designed to quantify the gravitational effects on thermal mixing and reactant injection in a Supercritical Water Oxidation (SCWO) reactor have recently been performed in the Zero Gravity Facility (ZGF) at NASA's Glenn Research Center. An artificial waste stream, comprising aqueous mixtures of methanol, was pressurized to approximately 250 atm and then heated to 450°C. After uniform temperatures in the reactor were verified, a controlled injection of air was initiated through a specially designed injector to simulate diffusion limited reactions typical in most continuous flow reactors. Results from a thermal mapping of the reaction zone in both 1-g and 0-g environments are compared. Additionally, results of a numerical model of the test configuration are presented to illustrate first order effects on reactant mixing and thermal transport in the absence of gravity.
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Authors
Citation
Hicks, M., Lauver, R., Hegde, U., and Sikora, T., "Diffusion Limited Supercritical Water Oxidation (SCWO) in Microgravity Environments," SAE Technical Paper 2006-01-2132, 2006, https://doi.org/10.4271/2006-01-2132.Also In
References
- NIST Chemistry WebBook NIST Standard Reference Database Number 69 June 2005
- Franck, E.U. “Combustion and Flames in Supercritical Fluids to 2000 bar” Recent Trends in High Pressure Research High Pressure 501 506 Proceding of the 13 th AIRAPT International Conference Oxford & IBH Publishing Co. Pvt. Ltd. 1992
- Wellig, B. Transpiring Wall Reactor for Supercritical Water Oxidation Swiss Federal Institute of Technology Zurich 2003
- Serikawa et. al. “Hydrothermal Flames in Supercritical Water Oxidation: Investigation in a Pilot Scale Continuous Reactor” Fuel 81 1147 1159 2002
- Hicks, M.C. Lauver, R.W. Hegde, U.G. Hall, D.G. Sikora, T.J. “Gravity Effects on Premixed and Diffusion Limited Supercritical Water Oxidation” SAE Technical Paper Series No. 2005-01-3036 35 th International Conference on Environmental Systems Rome, Italy July 11th '05