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BY-NC-ND 3.0 license Open Access Published by De Gruyter Open Access December 1, 2014

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

Nadezhda Bogatyreva, Milada Bartlova, Vladimir Aubrecht and Vladimir Holcman
From the journal Open Chemistry

Abstract

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.

Graphical Abstract

References

[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. Search in Google Scholar

[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. Search in Google Scholar

[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. 10.1088/0022-3727/41/13/135205Search in Google Scholar

[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. 10.1088/0022-3727/45/45/455203Search in Google Scholar

[5] Sasanuma M., et al., Photoionisation of SF6 in the XUV region, J. Phys. B: Atom. Molec. Phys., 1979, 12, 4057-4064. 10.1088/0022-3700/12/24/012Search in Google Scholar

[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. 10.1088/0022-3727/38/8/026Search in Google Scholar

[7] Burgess A., Seaton M., Cross Sections for Photoionisation from Valence-Electron States, Rev. Mod. Phys., 1958, 30, 992-993. 10.1103/RevModPhys.30.992Search in Google Scholar

[8] Liebermann R.W., Lowke J.J., Radiation emission coefficients for sulphur hexafluoride arc plasmas, JQSRT, 1976, 16, 253-264. 10.1016/0022-4073(76)90067-4Search in Google Scholar

[9] Aubrecht V., Bartlova M., Net Emission Coefficients of Radiation in Air and SF6 Thermal Plasmas, Plasma Chem. Plasma Process, 2009, 29, 131-147. 10.1007/s11090-008-9163-xSearch in Google Scholar

[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 10.1088/0022-3727/41/20/205212Search in Google Scholar

Received: 2014-1-9
Accepted: 2014-6-2
Published Online: 2014-12-1

© 2015 Nadezhda Bogatyreva et al.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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