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.
张立, 杨兰均, 喻梦晗, 詹唯, 郭胜辉. 均匀电场和极不均匀电场对水蒸发的影响[J]. 电工技术学报, 2019, 34(18): 3920-3927.
Zhang Li, Yang Lanjun, Yu Menghan, Zhan Wei, Guo Shenghui. The Influence of Uniform Electric Field and Extremely Non-Uniform Electric Field on Water Evaporation. Transactions of China Electrotechnical Society, 2019, 34(18): 3920-3927.
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