• Electrothermal efficiency, temperature and thermal conductivity of plasma jet in a DC plasma spray torch

    • Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Plasma spray torch; electrothermal efficiency; temperature and thermal conductivity

    • Abstract


      A study was made to evaluate the electrothermal efficiency of a DC arc plasma torch and temperature and thermal conductivity of plasma jet in the torch. The torch was operated at power levels from 4 to 20 kW in non-transferred arc mode. The effect of nitrogen in combination with argon as plasma gas on the above properties was investigated. Calculations were made from experimental data. The electrothermal efficiency increased significantly with increase in nitrogen content. The plasma jet temperature and thermal conductivity exhibited a decrease with increase in nitrogen content. The experiment was done at different total gas flow rates. The results are explained on the basis of dissociation energy of nitrogen molecules and plasma jet energy loss to the cathode, anode and the walls of the torch

    • Author Affiliations


      G Shanmugavelayutham1 V Selvarajan1

      1. Department of Physics, Bharathiar University, Coimbatore - 641 046, India
    • Dates

  • Pramana – Journal of Physics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.