通过纳秒脉冲DBD等离子体对空气进行消毒
Liyang Zhang1, Kai Wang2, Kaiyue Wu1
1Department of Electrical Engineering, Tsinghua University, Beijing 100084, China.
Journal of hazardous materials
|May 5, 2024
概括
纳米秒脉冲介电屏障放电 (DBD) 等离子体提供空气消毒,效率取决于特定的输入能量和湿度. 在最佳条件下,达到了~99%的细菌失活.
科学领域:
- 血物理学的等离子体物理学
- 环境工程环境工程
- 微生物学 微生物学
背景情况:
- 大气压介电屏障放电 (DBD) 等离子是公共空间的一个有前途的空气消毒技术.
- 电源,特别是纳米秒 (ns) 脉冲源对DBD等离子体消毒性能的影响尚不清楚.
研究的目的:
- 研究ns脉冲电源参数和环境因素对DBD等离子体放电特性的影响.
- 为了评估由NS脉冲电源驱动的内导管格式DBD阵列的单通细菌失活效率.
主要方法:
- 使用类似格子的DBD阵列,由NS脉冲电源供电,用于空气消毒.
- 多种脉冲参数 (频率,上升时间,脉冲宽度) 和环境因素 (相对湿度).
- 测量了排放特征和细菌失活效率.
主要成果:
- 消毒效率与较低相对湿度 (RH) 的特定输入能量相关.
- 更高的频率,更短的脉冲上升时间,以及最佳的脉冲宽度提高了性能 (更高的Z值).
- 空气流湿度是一个关键因素,在50%-60%的RH下达到~99%的无活化和Z值2.2 L/J.
结论:
- Ns脉冲DBD等离子体性能受到脉冲参数和环境因素的影响,特别是湿度.
- 特定输入能量是消毒剂量的关键指标.
- 最佳的湿度水平对于最大限度地提高空气消毒效率至关重要.
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