The heat transfer performance of an ionic jet impinging on the upper surface of a heated plate is investigated. Ions are injected by a point, set at high voltage. The working fluid is the viscous dielectric ester MIDEL 7131. Different tests are performed on the working fluid, varying the composition, the shape and the polarity of the point, the applied voltage, the point-to-plane distance and the imposed heat flux. The technique produces a heat transfer enhancement up to 310% with respect to natural convection. The electrohydrodynamic flow can be obtained without significant power input.
Heat Transfer Enhancement by an Impinging Ionic Jet in a Highly Viscous Liquid
TESTI, DANIELE
2009-01-01
Abstract
The heat transfer performance of an ionic jet impinging on the upper surface of a heated plate is investigated. Ions are injected by a point, set at high voltage. The working fluid is the viscous dielectric ester MIDEL 7131. Different tests are performed on the working fluid, varying the composition, the shape and the polarity of the point, the applied voltage, the point-to-plane distance and the imposed heat flux. The technique produces a heat transfer enhancement up to 310% with respect to natural convection. The electrohydrodynamic flow can be obtained without significant power input.File in questo prodotto:
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