Corona discharge under supercritical conditions
Corona discharge under supercritical conditions
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超临界条件下的电晕放电
DOI：
10.1109/plasma.2004.1340122
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
L. Kennedy
中科院分区：
文献类型：
--
作者：
E. Lock;A. Saveliev;L. Kennedy
仅提供摘要表格。在超临界流体环境中，由于流体临界点的压力和温度很高，非热放电的产生被认为是困难的。这源于帕森定律，该定律表明，增加工艺压力会导致产生等离子体所需电压的增加，从而增加运营成本。研究了超临界流体条件下临界点附近电晕放电的产生。在所研究的条件下，由于广泛的团簇形成，这一过程所需的电压比帕森定律预测的低三倍。然而，还需要进一步研究击穿电压与超临界流体温度和压力的关系，以便这种在超临界流体条件下产生等离子体的新过程能够用于材料科学和污染物去除应用。这项前景看好的新技术将超临界流体作为一种独特的反应介质的优势与高能等离子体状态的优势相结合，前者具有非均相化学、强化的传热和传质能力，后者具有快速化学反应和高选择性的特点。
Summary form only given. Generation of non-thermal discharge in supercritical fluid environment is considered difficult due to high pressures and temperatures of the critical points of the fluids. This arises form Paschen's law that suggests that increasing the process pressure leads to increase in the voltage required for plasma generation and, therefore, to enhanced operational cost. We have studied generation of corona discharge under supercritical fluid conditions near the critical point. The required voltage for this process is three times lower than the Paschen's law prediction due to extensive cluster formation under the investigated conditions. However, there is a need of further investigation of the dependence of the breakdown voltage on the temperature and pressure of the supercritical fluid, so that this new process-generation of plasma under supercritical fluid conditions can be used for material science and pollutant removal applications. This promising new technology offers combination of the advantages of supercritical fluids as a unique reaction media due to its heterogeneous chemistry, enhanced heat and mass transfer with the benefits of the high energetic plasma state that is characterized with fast chemical reactions and high selectivity.