Stack Parameters Effect on the Performance of Anharmonic Resonator Thermoacoustic Heat Engine

Handle URI:
http://hdl.handle.net/10754/597016
Title:
Stack Parameters Effect on the Performance of Anharmonic Resonator Thermoacoustic Heat Engine
Authors:
Nouh, Mostafa A.; Arafa, Nadim M.; Abdel-Rahman, Ehab
Abstract:
A thermoacoustic heat engine (TAHE) converts heat into acoustic power with no moving parts. It exhibits several advantages over traditional engines, such as simple design, stable functionality, and environment-friendly working gas. In order to further improve the performance of TAHE, stack parameters need to be optimized. Stack's position, length and plate spacing are the three main parameters that have been investigated in this study. Stack's position dictates both the efficiency and the maximum produced acoustic power of the heat engine. Positioning the stack closer to the pressure anti-node might ensure high efficiency on the expense of the maximum produced acoustic power. It is noticed that the TAHE efficiency can further be improved by spacing the plates of the stack at a value of 2.4 of the thermal penetration depth, δk . Changes in the stack length will not affect the efficiency much as long as the temperature gradient across the stack, as a ratio of the critical temperature gradient ψ is more than 1. Upon interpreting the effect of these variations, attempts are made towards reaching the engine's most powerful operating point.
Citation:
Nouh MA, Arafa NM, Abdel-Rahman E (2014) Stack Parameters Effect on the Performance of Anharmonic Resonator Thermoacoustic Heat Engine. Archive of Mechanical Engineering 61. Available: http://dx.doi.org/10.2478/meceng-2014-0006.
Publisher:
Walter de Gruyter GmbH
Journal:
Archive of Mechanical Engineering
Issue Date:
1-Jan-2014
DOI:
10.2478/meceng-2014-0006
Type:
Article
ISSN:
2300-1895
Sponsors:
This research is supported by KAUST (AUC-KAUST Integrated Desert Building Technologies project).
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorNouh, Mostafa A.en
dc.contributor.authorArafa, Nadim M.en
dc.contributor.authorAbdel-Rahman, Ehaben
dc.date.accessioned2016-02-23T13:52:32Zen
dc.date.available2016-02-23T13:52:32Zen
dc.date.issued2014-01-01en
dc.identifier.citationNouh MA, Arafa NM, Abdel-Rahman E (2014) Stack Parameters Effect on the Performance of Anharmonic Resonator Thermoacoustic Heat Engine. Archive of Mechanical Engineering 61. Available: http://dx.doi.org/10.2478/meceng-2014-0006.en
dc.identifier.issn2300-1895en
dc.identifier.doi10.2478/meceng-2014-0006en
dc.identifier.urihttp://hdl.handle.net/10754/597016en
dc.description.abstractA thermoacoustic heat engine (TAHE) converts heat into acoustic power with no moving parts. It exhibits several advantages over traditional engines, such as simple design, stable functionality, and environment-friendly working gas. In order to further improve the performance of TAHE, stack parameters need to be optimized. Stack's position, length and plate spacing are the three main parameters that have been investigated in this study. Stack's position dictates both the efficiency and the maximum produced acoustic power of the heat engine. Positioning the stack closer to the pressure anti-node might ensure high efficiency on the expense of the maximum produced acoustic power. It is noticed that the TAHE efficiency can further be improved by spacing the plates of the stack at a value of 2.4 of the thermal penetration depth, δk . Changes in the stack length will not affect the efficiency much as long as the temperature gradient across the stack, as a ratio of the critical temperature gradient ψ is more than 1. Upon interpreting the effect of these variations, attempts are made towards reaching the engine's most powerful operating point.en
dc.description.sponsorshipThis research is supported by KAUST (AUC-KAUST Integrated Desert Building Technologies project).en
dc.publisherWalter de Gruyter GmbHen
dc.rightsThis work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. (CC BY-NC-ND 3.0)en
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/en
dc.subjectAnharmonicen
dc.subjectEngineen
dc.subjectOptimizationen
dc.subjectResonatoren
dc.subjectStacken
dc.subjectThermoacousticen
dc.titleStack Parameters Effect on the Performance of Anharmonic Resonator Thermoacoustic Heat Engineen
dc.typeArticleen
dc.identifier.journalArchive of Mechanical Engineeringen
dc.contributor.institutionAmerican University in Cairo, Cairo, Egypten
dc.contributor.institutionAmerican University in Cairo, Cairo, Egypten
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