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Design of a Prototype ehd Air pump for Electronic Chip Cooling Applications

Plasma Science and Technology 2014年第5期16卷 491-501页

作者： Emmanouil D.FYLLADITAKIS Antonios X.MORONIS Konstantinos KIOUSIS Technological Educational Institute(TEI) of Athens Department of Energy Technology

This paper presents the design,optimization and fabrication of an ehd air pump intended for high-power electronic chip cooling *** high-voltage electrode configurations were selected and studied,in terms of the characteristics of the generated electric field,which play an important role in ionic wind *** this purpose,dedicated software is used to implement finite element *** design parameters,such as the electric field intensity,wind velocity,current flow and power consumption are *** different laboratory prototypes are fabricated and their performances experimentally *** procedure leads to the fabrication of a final prototype,which is then tested as a replacement of a typical fan for cooling a high power density electronic *** assist towards that end,an experimental thermal testing setup is designed and constructed to simulate the size of a personal computer’s CPU core of variable *** parametric study leads to the fabrication of experimental single-stage ehd pumps,the optimal design of which is capable of delivering an air flow of 51 CFM with an operating voltage of 10.5 ***,the theoretical and experimental results are evaluated and potential applications are proposed.

关键词： electrohydrodynamics(ehd) ionic wind ehd pump cooling apparatus finite element method computer CPU cooling electronic chip cooling

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First thrust measurements in ionic multi-propeller rotational engines

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Propulsion and Power Research 2023年第1期12卷 44-58页

作者： Adrian Ieta Marius Chirita Electrical and Computer Engineering Department SUNY OswegoOswegoNY 13126-3599USA Applied Physics/Condensed Matter Department National Institute for Research and Development in Electrochemistry and Condensed MatterTimisoaraRO-300224Romania

Rotary ionic engines(RIEs)with multi-coaxial contra-rotating propellers(12.6 cm diameter)and their axial thrust are investigated in laboratory conditions,in air at atmospheric pressure,for the first *** goal is to evaluate more advantageous configurations that may be scaled up and further help with development of rotary ionic *** propellers are designed with regular pin-emitter electrodes placed coaxially inside a cylindrical collector *** high voltage is applied,propellers spin generating conventional axial thrust which is measured with an electronic scale in a“see-saw”*** to 40 mN thrust was obtained in single propeller RIE at 2600 rpm,0.34 mA,37.5 kV,and an optimal collector electrode diameter of 17 *** thrust can be obtained with two and three propellers at constant current per propeller but at a decreased *** the axial propeller-separation showed that propeller-interaction is minimal above 5 ***-to-power and thrust-tocurrent ratios were calculated and *** experimentally confirm here for the first time that within certain limits,the thrust-to-power variation can be assessed by the propeller kinetic energy-to-power ratio and also by the impedance of the gap(voltage-to-current ratio).A comparison of RIE arrays performance with one,two,and three coaxial propellers and the same total number of propellers per array(six)is also *** arrays with multi-coaxial propellers can provide larger thrust densities than single-propeller ***,arrays employing two coaxial propeller unit may be more weight effective.

关键词： Ionic wind ehd pump Electrohydrodynamics Corona discharge Thrust-to-power Propeller Ion propulsion Plasma thrusters Electroaerodynamic thrusters Ionocraft

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