Abstract
Electro-fluid-dynamic cooling devices (EFAs) are being recognized due to their enormous advantages for their application in several industrial sectors, their performance benefits from generated ionic winds and their singular features, which make them competitive with conventional fans and heatsinks. Due to the problems in the electronics industry, where traditional refrigeration systems are not effective due to their dimensions, this study analyzes an innovative arrangement based on wire-to-plane fins by direct current (DC) positive corona discharge in atmospheric air for applications. The paper focuses on optimizing the multicriteria geometry of the electrodes. Several parameters are analyzed such as the gap between emitter and ground electrodes, the electrode materials and geometry, the diameter of the high-voltage electrode and the influence of the dielectric barriers located near the corona electrode to improve heat exchange. Experimental validation shows the potential of this arrangement related to weight, volume, non-mobile parts and silence.
Highlights
Electrohydrodynamic flow (EHD) [1] caused by corona discharge is the branch of science that studies the movement of a fluid under a non-uniform electric field and develops technology based on these studies
We have presented a promising design and development based on the configuration of the wire-to-plane fins with applications in
We have presented a promising design and development based on the configuration of the wire-to-plane fins with applications in the microelectronic industry
Summary
Electrohydrodynamic flow (EHD) [1] caused by corona discharge is the branch of science that studies the movement of a fluid under a non-uniform electric field and develops technology based on these studies. Gas molecules near corona electrode are ionized when a high-intensity electric field is applied between a highly curved corona electrode and a ground electrode. There are different corona-discharge configurations according to electrode geometries, the most relevant being wire-to-plane [2,3,4], wire-to-cylinder [5], needle-to-plane [6,7], needle-to-ring [8]. Research on corona discharge has been carried out in different media highlighting the investigations in atmospheric air with standard conditions, more recently, many refrigerants such as R113 [10,11] R114 [12] R134a [13] have been studied. Considering atmospheric air, when the dielectric breakdown of the air is reached (approximately E = 3 × 106 V/m), the ionization of the air molecules around the high-voltage electrode induces a corona discharge
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