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You searched for subject:(Steam plasma). Showing records 1 – 2 of 2 total matches.

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McGill University

1. Habelrih, Maysaa. Electrode erosion in steam plasma.

Degree: M. Eng., Department of Chemical Engineering, 1990, McGill University

Note:

Experimental results are presented for electrode erosion on copper cathodes in magnetically rotated arcs in a steam plasma medium. Arc currents of lOO A, gas pressures of 1.1 atm. and a transverse magnetic field of 0.11 Tesla were generally used. The arc voltage and arc velocity were measured and the erosion rates determined by weight loss after chemical cleaning. The test results with steam showed an increase in arc velocity and arc voltage and a decrease in the cathode erosion rate as the concentration of steam in argon increased. For pure steam, the arc velocity was 56 m/s vs. 2 m/s for Ar, the erosion rate was evaluated at 2.3 pg/C vs. 14.8 pg/C for Ar and the measured arc voltage was 193 V vs. 44 V for Ar. […]

Les résultats expérimentaux de l'érosion des cathodes en cuivre, par un arc souflé par un champ magnétique, dans une plasma de vapeur d'eau, sont présentés. Un courant d'arc de 100 A, une pression de 1.1 atm. et un champs magnétique de 0.11 Tesla ont généralement été utilisés. La tension et la vitesse de l'arc ont été mesurées et le taux d'érosion calculé d'après la perte de masse après nettoyage chimique. Les essais avec des concentrations croissantes de vapeur d'eau dans l'argon ont résulté en une hausse de la tension et de la vitesse de l'arc et en une baisse du taux d'érosion de la cathode. Avec de la vapeur d'eau pure, la vitesse de l'arc était de 56 m/s vs. 2 m/s avec l'argon, le taux d'érosion a été évalué à 2.3 ug/C vs. 14.8 pg/C avec l'argon et la tension de l'arc était de 193 V vs. 44 V avec l'argon. […]

Advisors/Committee Members: Munz, R. J. (Supervisor).

Subjects/Keywords: Steam plasma

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Habelrih, M. (1990). Electrode erosion in steam plasma. (Masters Thesis). McGill University. Retrieved from http://digitool.library.mcgill.ca/thesisfile156159.pdf

Chicago Manual of Style (16th Edition):

Habelrih, Maysaa. “Electrode erosion in steam plasma.” 1990. Masters Thesis, McGill University. Accessed July 16, 2019. http://digitool.library.mcgill.ca/thesisfile156159.pdf.

MLA Handbook (7th Edition):

Habelrih, Maysaa. “Electrode erosion in steam plasma.” 1990. Web. 16 Jul 2019.

Vancouver:

Habelrih M. Electrode erosion in steam plasma. [Internet] [Masters thesis]. McGill University; 1990. [cited 2019 Jul 16]. Available from: http://digitool.library.mcgill.ca/thesisfile156159.pdf.

Council of Science Editors:

Habelrih M. Electrode erosion in steam plasma. [Masters Thesis]. McGill University; 1990. Available from: http://digitool.library.mcgill.ca/thesisfile156159.pdf


Penn State University

2. Vamos, Michael. MICROWAVE PLASMA TORCH FOR ALUMINUM COMBUSTION.

Degree: 2018, Penn State University

Aluminum particles can be used as a fuel source in combustion systems. Breaching the protective oxide shell is critical in the initiation of the particles combustion, since the aluminum center cannot react until the shell is cracked or vaporized. Microwave plasma torches have been shown to be effective at igniting various fuels, including aluminum. This work investigates workable conditions of a coaxial microwave plasma torch for igniting aluminum powder. The plasma filament and aluminum particle interaction were also investigated.An argon plasma was formed in a coaxial torch and aluminum particles were passed through the filaments without any oxidizer. Through the use of spectroscopy, aluminum and aluminum oxide spectral peaks were observed. The post-plasma particles were collected and observed using a scanning electron microscope, showing that many particles were fused together. A plasma temperature fitting was performed with Specair showing an approximate temperature between 25003400 K.Combustion tests were performed using air, steam, and carbon dioxide as oxidizers. Combustion was achieved with all three oxidizers. The aluminumair flame produced a stable and anchored flame. Aluminumsteam also produced a favorable anchored flame; however, it was not repeatable. Aluminumcarbon dioxide reacted with a small flame. Further tests with carbon dioxide still need to be performed.The aluminumair flame was characterized over several equivalence ratios. The flame was anchored at the injector tip for lean and near stoichiometric conditions. Fuel-rich experiments still burned; however, the flame was thinner at the injector tip. For the lean and near stoichiometric conditions, the microwave power was able to be turned off after combustion began.ivThe most stable configuration for the coaxial microwave plasma torch for igniting aluminum was: Equivalence ratio of 0.9 , annulus velocity of 8.8 m/s (10 swirl), core flow velocity of 1.0 m/s, and 200 W of microwave power with air in the outer flow and argon and aluminum powder in the core flow. Advisors/Committee Members: Richard A Yetter, Thesis Advisor.

Subjects/Keywords: aluminum; combustion; plasma; torch; ignition; microwave; metal combustion; plasma assisted combustion; igniter; coaxial; spectroscopy; temperature fitting; spectrometer calibration; air; steam; carbon dioxide

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Vamos, M. (2018). MICROWAVE PLASMA TORCH FOR ALUMINUM COMBUSTION. (Thesis). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/15672mxv35

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Vamos, Michael. “MICROWAVE PLASMA TORCH FOR ALUMINUM COMBUSTION.” 2018. Thesis, Penn State University. Accessed July 16, 2019. https://etda.libraries.psu.edu/catalog/15672mxv35.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Vamos, Michael. “MICROWAVE PLASMA TORCH FOR ALUMINUM COMBUSTION.” 2018. Web. 16 Jul 2019.

Vancouver:

Vamos M. MICROWAVE PLASMA TORCH FOR ALUMINUM COMBUSTION. [Internet] [Thesis]. Penn State University; 2018. [cited 2019 Jul 16]. Available from: https://etda.libraries.psu.edu/catalog/15672mxv35.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Vamos M. MICROWAVE PLASMA TORCH FOR ALUMINUM COMBUSTION. [Thesis]. Penn State University; 2018. Available from: https://etda.libraries.psu.edu/catalog/15672mxv35

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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