The Influence of Pulse Shape on the Production of OH Radicals by Pulsed Discharge
The Influence of Pulse Shape on the Production of OH Radicals by Pulsed Discharge
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DOI：
10.1109/tps.2022.3229734
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发表时间：
2023-01
影响因子：
1.5
通讯作者：
Phung Nhat Thanh;T. Sugai;A. Tokuchi;Weihua Jiang
中科院分区：
文献类型：
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作者：
Phung Nhat Thanh;T. Sugai;A. Tokuchi;Weihua Jiang
在这项研究中，脉冲波形特性对水处理系统中常压下OH自由基产生的影响进行了研究。固态线性Transformer驱动器（LTD），这是能够产生各种波形的脉冲功率，在这些实验中使用。为了研究脉冲流光放电最后阶段电压对OH自由基产生的影响，将纳秒脉冲分为前、后两部分，在平均输入功率相同的条件下，通过改变后一部分电压来评价OH自由基的产生。结果，当脉冲的最后部分的电压被抑制时，OH自由基产生产率增加，这意味着在最后阶段效率低。然后，为了评价最后部分的现象，还仅测量了最后部分的OH自由基产生产率。随着最后一段电压的增加，产率增加。结果表明，初流后电场的减小是导致末阶段成品率低的原因之一。
In this study, the effects of pulse waveform characteristics on the production of OH radical under atmospheric pressure in a water treatment system have been studied. A solid-state linear transformer driver (LTD), which is capable of generating pulsed power with various waveforms, was used in these experiments. In order to investigate the effect of voltage at the last phase of pulsed streamer discharge on production of OH radical, the nanosecond pulse was separated into two parts, the first part and the last part, and the production of OH radical was evaluated by changing the voltage of last part under condition of the same average input power. As a result, when the voltage of the last part of the pulse is suppressed, the OH radical production yield increased, which means inefficient at the last phase. Then, to evaluate the phenomenon at the last part, the OH radical production yield at the last part only was also measured. The yield increased with an increase of the voltage at the last part. It proves that one of the reasons of inefficiency of the production yield at the last phase is electric field reduction after the primary streamer.