Advertisement

Plasma Chemistry and Plasma Processing

, Volume 38, Issue 4, pp 759–770 | Cite as

Influence of the Shroud Gas Injection Configuration on the Characteristics of a DC Non-transferred Arc Plasma Torch

  • Yugesh Vadikkeettil 
  • Ravi Ganesh 
  • Ramachandran Kandasamy 
  • Vidhi Goyal 
  • Kailsha Chandra Meher
Original Paper
  • 96 Downloads

Abstract

The characteristics of the plasma jet emanating from a dc non-transferred plasma torch is affected by many factors including arc current, type of gas, gas flow rate, gas injection configuration and torch geometry. The present work focuses on experimental investigation of the influence of shroud gas injection configuration on the I–V characteristics and electro-thermal efficiency of a dc non-transferred plasma torch operated in nitrogen at atmospheric pressure. The plasma gas is injected into the torch axially and shroud gas is injected through three different nozzles such as normal, sheath and twisted nozzles. The effects of flow rates of plasma/axial gas and arc current on I–V characteristics and electro-thermal efficiency of the torch holding different nozzles are investigated. The I–V characteristics and electro-thermal efficiency of the torch are found to be strongly influenced by the shroud gas injection configuration. The effect of arc current on arc voltage decreases with increasing the axial gas flow rate. At higher axial gas flow rate (> 45 lpm), the I–V characteristics of the plasma torch are similar irrespective of the nozzle used. The variation of electro-thermal efficiency with arc current is almost similar to that of arc voltage with arc current. As expected, the electro-thermal efficiency is increased when the axial gas flow rate is increased and at higher axial gas flow rate, it is not influenced by the arc current and shroud gas configuration. The plasma torch with normal nozzle may be better in the range of operating conditions used in this study.

Keywords

I–V characteristics Plasma torch DC non-transferred arc Shroud gas injection Electro-thermal efficiency 

References

  1. 1.
    Boulos MI, Fauchais P, Pfender E (1994) Thermal plasma, vol. 1: fundamentals and application. Plenum Press, New YorkCrossRefGoogle Scholar
  2. 2.
    Boulos MI (1991) Thermal plasma processing. IEEE Trans Plasma Sci 19:1078–1089CrossRefGoogle Scholar
  3. 3.
    Taylor PR, Pirzada SA (1994) Thermal plasma processing of materials: a review. Adv Perform Mater 1:35–50CrossRefGoogle Scholar
  4. 4.
    Fauchais P, Montavon G, Vardelle M, Cedelle J (2006) Developments in direct current plasma spraying. Surf Coat Technol 201:1908–1921CrossRefGoogle Scholar
  5. 5.
    Gomez E, Rani DA, Cheeseman CR, Deeganc D, Wise M, Boccaccinia AR (2009) Thermal plasma technology for the treatment of wastes: a critical review. J Hazard Mater 161:614–626CrossRefGoogle Scholar
  6. 6.
    Seo JH, Hong BG (2012) Thermal plasma synthesis of nano-sized powders. Nucl Eng Technol 44:9–20CrossRefGoogle Scholar
  7. 7.
    Cheron BG, Bultel A, Delair L (2007) Experimental Study of a double arc nitrogen plasma: static and dynamic behavior. IEEE Trans Plasma Sci 35:498–508CrossRefGoogle Scholar
  8. 8.
    Kurtz MA, Kurtz HL, Laure S (1996) Plasma generators for re-entry simulation. J Propul Power 12:1053–1061CrossRefGoogle Scholar
  9. 9.
    Fauchais P, Vardelle A (2000) Pending problems in thermal plasmas and actual development. Plasma Phys Control Fus 42:B365–B383CrossRefGoogle Scholar
  10. 10.
    Zhukov MF, Zasypin IM (2007) Thermal plasma torches: design, characteristics, applications. Cambridge International Science Publishing, CambridgeGoogle Scholar
  11. 11.
    Cao X, Yu D, Xiang Y, Yao J (2016) Influence of the gas injection angle on the jet characteristics of a non-transferred dc plasma torch. Plasma Chem Plasma Process 36:881–889CrossRefGoogle Scholar
  12. 12.
    Felipini CL, Pimenta MM (2015) Some numerical simulation results of swirling flow in d.c. plasma torch. J Phy Conf Ser 591:1–13CrossRefGoogle Scholar
  13. 13.
    Moon J-H, Jan J-G, Kim YJ (2005) Performance of an atmospheric plasma torch with various inlet angles. Surf Coat Technol 193:94–100CrossRefGoogle Scholar
  14. 14.
    Yuan XQ, Li H, Zhao TZ, Wang F, Gou WK, Xu P (2004) Comparative study of flow characteristics inside plasma torch with different nozzle configurations. Plasma Chem Plasma Process 24:585–601CrossRefGoogle Scholar
  15. 15.
    Kang KD, Hong SH (1999) Numerical analysis of shroud gas effects on air entrainment into thermal plasma jet in ambient atmosphere of normal pressure. J Appl Phys 85:6373–6380CrossRefGoogle Scholar
  16. 16.
    Gross B, Grycz B, Miklossy K (1968) Plasma technology. Iliffe Books Ltd, LondonGoogle Scholar
  17. 17.
    Ramachandran K, Marques J-L, Vaßen R, Stöver D (2006) Modelling of arc behavior inside a F4 APS torch. J Phys D Appl Phys 39:3323–3331CrossRefGoogle Scholar
  18. 18.
    Shicong B, Wenkang G, Minyou YE, Ping XU, Xiaodong Z (2008) Characteristics and thermal efficiency of a non-transferred DC plasma spraying torch under low pressure. Plasma Sci Technol 10:701–705CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Yugesh Vadikkeettil 
    • 1
  • Ravi Ganesh 
    • 2
    • 3
  • Ramachandran Kandasamy 
    • 4
  • Vidhi Goyal 
    • 2
    • 3
  • Kailsha Chandra Meher
    • 2
  1. 1.Karunya UniversityCoimbatoreIndia
  2. 2.Institute for Plasma ResearchBhat, GandhinagarIndia
  3. 3.Homi Bhabha National InstituteAnushaktinagar, MumbaiIndia
  4. 4.Bharathiar UniversityCoimbatoreIndia

Personalised recommendations