| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Characteristics of a Novel Water Plasma Torch |
NI Guo-Hua, MENG Yue-Dong, CHENG Cheng, LAN Yan
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| Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 |
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| Cite this article: |
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NI Guo-Hua, MENG Yue-Dong, CHENG Cheng et al 2010 Chin. Phys. Lett. 27 055203 |
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Abstract Relying on heat generated by plasma arc heating liquid water into steam as a swirl gas, a water plasma torch has the distinctive steam generation structure, which has various applications such as in the treatment of organic waste and hydrogen production for fuel cells in future vehicles. The operational features of the water plasma torch and water phase change process in the discharge chamber are investigated based on the temporal evolution of the voltage and current. The optical emission spectrum measurement shows that the water molecule in the plasma is decomposed into H, OH and O radicals. As the electrodes do not require water-cooling, the thermal efficiency of the torch is very high, which is confirmed by analytical calculation and experimental measurement.
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| Keywords:
52.50.Dg
52.50.Nr
52.80.Mg
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Received: 14 January 2010
Published: 23 April 2010
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| PACS: |
52.50.Dg
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(Plasma sources)
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52.50.Nr
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(Plasma heating by DC fields; ohmic heating, arcs)
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52.80.Mg
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(Arcs; sparks; lightning; atmospheric electricity)
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