均匀电场和极不均匀电场对水蒸发的影响

doi:10.19595/j.cnki.1000-6753.tces.181106

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Abstract In this paper, to observe the influence of the uniform electric field and extremely non-uniform electric field on water evaporation, the water body is used as the grounding electrode, and the high voltage is applied to the mesh electrode and the multi-wire electrode above the water surface. The results show that the use of a grid electrode to form a vertical uniform electric field can promote water evaporation. A multi-wire electrode can induce an extremely non-uniform electric field perpendicular to the water surface, while a discharge occurs on the surface of the wire electrode. When the discharge is just developed on the surface of the electrode, the space charge generated carries the water molecules back to the water surface, resulting in the effect of suppressing evaporation. With the increase of applied voltage, the discharge strength on the surface of the wire electrode increases, and the ion wind begins to develop, which increases the convective exchange between the water surface and the air and obviously promotes water evaporation. Larger evaporation rates can be obtained when using ion wind than just applying an electric field perpendicular to the water surface. In this paper, thermodynamic theory is used to explain the phenomena and principles of experiments.

Key words： Electric field discharge evaporation chemical potential ion wind

Received: 25 June 2018 Published: 26 September 2019

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TM85

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	Zhang Li
	Yang Lanjun
	Yu Menghan
	Zhan Wei
	Guo Shenghui

Cite this article:

Zhang Li,Yang Lanjun,Yu Menghan等. The Influence of Uniform Electric Field and Extremely Non-Uniform Electric Field on Water Evaporation[J]. Transactions of China Electrotechnical Society, 2019, 34(18): 3920-3927.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.181106 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/I18/3920

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