P1-approximation for radiative transfer: application to SF₆+ Cu arc plasmas

• Autorzy: Nadezhda Bogatyreva , Milada Bartlova , Vladimir Aubrecht , Vladimir Holcman
• Języki publikacji: EN

Abstrakty

EN

The objective of the paper consists of a theoretical prediction of radiative heat transfer in arc plasmas of SF6 (sulphur hexafluoride) with various admixtures of copper vapours. The P1-approximation was used as a mathematical tool. Due to the very complicated frequency dependence of absorption coefficients, the Planck and Rosseland mean absorption coefficients have been derived from the calculated absorption spectrum. The main radiation quantities (radiation intensity, radiation flux density and its divergence – net emission) have been determined in cylindrical arc plasmas for several model temperature profiles. Contribution to the net emission of copper admixtures is discussed. Conclusions have been made concerning validity and utilization of various absorption means.

EN

Słowa kluczowe

EN

thermal plasma radiation; mean absorption coefficients; net emission

• Czasopismo: Open Chemistry
• Rocznik: 2015
• Tom: 13
• Numer: 1

Daty

otrzymano

2014-01-09

zaakceptowano

2014-06-02

online

2014-12-01

Twórcy

autor

Nadezhda Bogatyreva

• Faculty of Electrical Engineering and Communication, Brno University of Technology, Technicka 8, 612 00 Brno, Czech Republic,

autor

Milada Bartlova

• Faculty of Electrical Engineering and Communication, Brno University of Technology, Technicka 8, 612 00 Brno, Czech Republic,

autor

Vladimir Aubrecht

• Faculty of Electrical Engineering and Communication, Brno University of Technology, Technicka 8, 612 00 Brno, Czech Republic,

autor

Vladimir Holcman

• Faculty of Electrical Engineering and Communication, Brno University of Technology, Technicka 8, 612 00 Brno, Czech Republic,

Bibliografia

• [1] Aubrecht V., Bartlova M., Influence of Cu Vapour on Radiation in SF6 Arc Plasma, In: P. Sutta, et al. (Ed.), Proceedings of XIVth Symposium on Application of plasma Processes (13-18 January 2003, Liptovsky Mikulas, Slovak Republic), Comenius University Bratislava, 2003, 5-6.
• [2] Aubrecht V., Bartlova M., Contribution of Cu Vapour to Radiation Transfer in SF6 + PTFE Arc Plasmas, In: R. d’Agostino, et al. (Ed.), Proceedings of 16th International Symposium on Plasma Chemistry (22-27 June 2003, Taormina, Italy), University of Bari, 2003, 682-686.
• [3] Nordborg H., Iordanidis A.A., Self-consistent radiation based modelling of electric arcs: I. Efficient radiation approximations, J. Phys. D: Appl. Phys., 2008, http://iopscience.iop.org/0022-3727/41/13/135205.
• [4] Peyrou B., et al., Radiative properties and radiative transfer in high pressure thermal air plasmas, J. Phys. D: Appl. Phys., 2012, http://iopscience.iop.org/0022-3727/45/45/455203.
• [5] Sasanuma M., et al., Photoionisation of SF6 in the XUV region, J. Phys. B: Atom. Molec. Phys., 1979, 12, 4057-4064.[Crossref]
• [6] Coufal O., Sezemsky P., Zivny O., Database system of thermodynamic properties of individual substances at high temperatures, J. Phys. D: Appl. Phys., 2005, 38, 1265-1274.[Crossref]
• [7] Burgess A., Seaton M., Cross Sections for Photoionisation from Valence-Electron States, Rev. Mod. Phys., 1958, 30, 992-993.[Crossref]
• [8] Liebermann R.W., Lowke J.J., Radiation emission coefficients for sulphur hexafluoride arc plasmas, JQSRT, 1976, 16, 253-264.
• [9] Aubrecht V., Bartlova M., Net Emission Coefficients of Radiation in Air and SF6 Thermal Plasmas, Plasma Chem. Plasma Process, 2009, 29, 131-147.
• [10] Hannachi R., et al., Net Emission of H2O-air-MgCl2/CaCl2/NaCl thermal plasmas, J. Phys. D: Appl. Phys., 2008, http://iopscience.iop.org/0022-3727/41/20/205212

Identyfikatory

DOI

10.1515/chem-2015-0063