2017 Fiscal Year Final Research Report
Study on Generation method of Charged Droplets using resonant vibtration of water droplet under high electric field
| Project/Area Number |
15H03957
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Power engineering/Power conversion/Electric machinery
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| Research Institution | Yamagata University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
杉本 俊之 山形大学, 大学院理工学研究科, 准教授 (10282237)
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| Research Collaborator |
NAKAJIMA Takuya
KAMATA Masafumi
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 負コロナ放電 / テーラーコーンの分裂 / 帯電水滴 / 共振振動 / ナノ水滴の生成 / パルス波形の減衰時間 / 細管電極 / 導電率 |
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| Outline of Final Research Achievements |
Corona discharge from a water droplet extruded at a tip of a capillary tube with 0.18mm diameter under a strong dc electric field causes was investigated focusing on the state of a cone formation and disruption, the size of ejected charged droplets and the method for increasing the number of droplets. Possibility of humidity control in room air was confirmed experimentally using charge droplets.
The resonant frequency of droplet vibration due to the cone disruption depends on the droplet volume. The current waveform consists of the largest first pulse by disruption of the cone and successive negative corona pulse trains. The peak value of the first current pulse and charge quantity increase with conductivity of sample water. The decay time of the first current pulse was larger than that of successive corona pulses and depends on the conductivity of sample water. The nanometer-sized charged droplets was could be used to adjust the relative humidity.
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| Free Research Field |
電気工学
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