Acoustic approach to thermal management: miniature thermoacoustic engines

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Publication Type Journal Article
School or College College of Science
Department Physics
Creator Symko, Orest George
Title Acoustic approach to thermal management: miniature thermoacoustic engines
Date 2006
Description An acoustic approach to thermal management in electronics can be efficient and it can be directly interfaced with electronic devices. It is based on two types of thermoacoustic heat engines, which are being developed for microcircuit applications. One type of device, the prime mover, converts heat to sound; energy is radiated away acoustically. This is achieved with essentially no moving parts. The other type of device, a heat pump or refrigerator, moves heat from one reservoir to another reservoir using sound waves. Both devices are resonant and hence their size scales inversely with operating frequencies. Devices presented here operate in the frequency range of 4 kHz to 21 kHz, depending on their size. The components are simple and they can be fabricated using microcircuit techniques. They consist of an acoustic resonator, heat exchangers, a stack of high surface area material for heat storage, and a working gas such as air or helium or gas mixture (He - Ar). The cooler has a loudspeaker to generate the sound for pumping heat, while the prime mover has a coupler to the source of heat. Working devices range in size from 2 cm to a few millimeters. Their efficiency, which depends on geometrical actors, is an appreciable fraction of Carnot. An important feature is a high power density. Working models and modeling show that power densities of several watts per cubic centimeter can be achieved by optimizing the parameters and working conditions. Performance characteristics of miniature prime movers and refrigerators will be presented.
Type Text
Publisher Institute of Electrical and Electronics Engineers (IEEE)
First Page 771
Last Page 776
DOI 10.1109/ITHERM.2006.1645424
Subject Thermoacoustic engines; Thermal management
Subject LCSH Waste heat; Electronic apparatus and appliances -- Cooling; Electronic circuits -- Cooling
Language eng
Conference Title Thermal and Thermomechanical 10th Intersociety Conference on Phenomena in Electronics Systems, 2006. ITHERM 2006.; May 30-June 2, 2006; San Diego, CA
Bibliographic Citation Symko, O. G. (2006). Acoustic approach to thermal management: miniature thermoacoustic engines. Thermomechanical Phenomena in Electronic Systems -Proceedings of the Intersociety Conference, 771-6
Rights Management (c) 2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Format Medium application/pdf
Format Extent 445,339 bytes
Identifier ir-main,11106
ARK ark:/87278/s6fr0f66
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2021-05-06
ID 706730
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