Calculation of Arc Power Losses in the Simplified Model of Intensively Blasted Electric Arc
DOI:
https://doi.org/10.14311/ppt.2017.1.40Keywords:
electric arc, model, experiment, power loss, net emission coefficientAbstract
In previous versions of the simplified model of intensively blasted electric arc burning in argon in the arc heater's anode channel, the authors used the constant total power loss coefficient for estimation of arc power losses in all anode channel individual parts. Using this approach, the model with relatively low computational complexity has led to very good agreement between the total computed and experimentally obtained values, but when the computed and measured power losses of individual anode channel segments have been compared, considerable differences have been revealed. In the modified model, theoretically computed net emission coefficient of argon is used in the energy equation to express the arc power losses. This way, satisfactory accordance is achieved between not only the total, but also partial measured and computed values. Exemplary results are given in figures and tables and discussed.References
J. Senk, I. Jakubova, and I. Laznickova. Analysis of intensively blasted electric arc burning in the arc heater’s anode channel. Acta Polytechnica, 56(5):395–401, 2016. doi:10.14311/AP.2016.56.0395.
J. Senk, I. Jakubova, and I. Laznickova. Remarks on the design of high-temperature devices with electric arc. In Proc. of the 15th Internat. Sci. Conf. Electric Power Engineering. FEEC Brno University of Technology, 2014.
J. Senk, I. Laznickova, and I. Jakubova. Power loss distribution along the arc heater with intensively blasted electric arc. In Proc. of the 18th Internat. Sci. Conf. Electric Power Engineering. To be published, 2017.
P. Kloc, V. Aubrecht, M. Bartlova, and O. Coufal. Radiation transfer in air and air-Cu plasmas for two temperature profiles. J Phys D: Appl Phys, 48(5):1–13, 2015. doi:10.1088/0022-3727/48/5/055208.
Herman Schlichting. Grenzschicht Theorie. Verlag G. Braun, Karlsruhe, Germany, 1965.
A. Bauer. Zur theorie des kathodenfalls in lichtbogen. Z. Physik, 138:35–55, 1954. doi:10.1007/BF01365533.
A. A. Belevtsev et al. Experimental study of the near-electrode plasma-tungsten cathode system in high-current athmospheric-pressure nitrogen arcs. High Temperature, 51(5):583–593, 2013. doi:10.1134/S0018151X13050027.
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