Performance of special type heat sink with an integrated synthetic jet actuator

Paweł Gil,B Kaźmierczak,M Kutyłowska,U Miller,P Jadwiszczak

doi:10.1051/e3sconf/201910000017

Paweł Gil, B Kaźmierczak + Show 3 more

Open Access

https://doi.org/10.1051/e3sconf/201910000017

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Journal: E3S Web of Conferences	Publication Date: Jan 1, 2019
Citations: 11	License type: CC BY 4.0

Affiliation: Rzeszów University of Technology

Abstract

The performance of special type heat sink with integrated synthetic jet actuator has been presented in this work. Synthetic jet is a flow technique which synthesizes stagnant air to a form of jet. Synthetic jet produces high turbulent flow and thus high heat transfer coefficient can be achieved. Standard heat sink with fan have limited applications in particular in a dusty industrial environment. Therefore, the use of new flow technique is optimistic. The paper presents preliminary results of heat sink thermal power and characteristic temperatures during synthetic jet switched on and off. The results show that under synthetic jet switched on, the dissipated heat is 3.7 times higher than when synthetic jet is switched off.

Highlights

A synthetic jet is produces by a diaphragm oscillating in a cavity with one or more orifices, which produces a volume changing and pressure variation
Synthetic jet impinging cooling required some distance between synthetic jet actuator orifice and heated plate for effective cooling because for small jet to surface distance, hot air is sucked in synthetic jet actuator cavity reducing thermal power dissipation [9]
The aim of this paper is to propose a new design of heat sink with an integrated synthetic jet actuator

Summary

Introduction

A synthetic jet is produces by a diaphragm oscillating in a cavity with one or more orifices, which produces a volume changing and pressure variation. Since the end of the last century, the synthetic jet has been the subject of interest especially in the field of heat transfer enhancement [7] and flow control [8]. Synthetic jet is widely used for heat removal especially in two geometrical configurations: impinging cooling and with laminar cross flow. Synthetic jet impinging cooling required some distance between synthetic jet actuator orifice and heated plate for effective cooling because for small jet to surface distance, hot air is sucked in synthetic jet actuator cavity reducing thermal power dissipation [9]. Heat sink thermal resistance was 3.15°C/W and for synthetic jet forced convection was 0.76°C/W

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