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Progress in Biomass and Bioenergy Production
- 1.
SYSNO ASEP 0363331 Document Type M - Monograph Chapter R&D Document Type Monograph Chapter Title Numerical Investigation of Hybrid-Stabilized Argon-Water Electric Arc Used for Biomass Gasification Author(s) Jeništa, Jiří (UFP-V) RID, ORCID
Takana, H. (JP)
Nishiyama, H. (JP)
Bartlová, M. (CZ)
Aubrecht, V. (CZ)
Křenek, Petr (UFP-V) RID
Hrabovský, Milan (UFP-V) RID
Kavka, Tetyana (UFP-V) RID
Sember, Viktor (UFP-V) RID
Mašláni, Alan (UFP-V) RIDSource Title Progress in Biomass and Bioenergy Production, Part 1 Gasification and Pyrolysis. - Rijeka : InTech, 2011 / Shahid Shaukat Syed - ISBN 978-953-307-491-7 Pages s. 63-88 Number of pages 26 s. Number of copy 200 Number of pages 444 Publication form web - web Language eng - English Country HR - Croatia Keywords hybrid-stabilized electric arc ; mass flow rate ; net emission coefficients ; partial characteristics ; Mach number ; shock diamonds Subject RIV BL - Plasma and Gas Discharge Physics R&D Projects GAP205/11/2070 GA ČR - Czech Science Foundation (CSF) KJB100430901 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20430508 - UFP-V (2005-2011) UT WOS 000373690100005 DOI 10.5772/972 Annotation This paper presents numerical investigation of characteristics and processes in the worldwide unique type of thermal plasma generator with combined stabilization of arc by argon flow and water vortex, the so-called hybrid-stabilized arc. The arc has been used for spraying of ceramic or metallic particles and for pyrolysis of biomass. The net emission coefficients as well as the partial characteristics methods for radiation losses from the argon-water arc are employed. Calculations for 300-600 A with 22.5-40 standard liters per minute (slm) of argon reveal transition from a transonic plasma flow for 400 A to a supersonic one for 600 A with the maximum Mach number of 1.6 near the exit nozzle of the plasma torch. Comparison with available experimental data near the exit nozzle proved very good agreement for the radial temperature profiles. Radial velocity profiles calculated 2 mm downstream of the nozzle exit show good agreement with the profiles determined from the combination Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2012
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