Study of the thermoacoustic effect in an oscillating flow

Thermoacoustic engines have received many attention because of the lack of moving parts and environmental benefits. The lack of moving parts means less mechanical damage, lesser wear and tear leading to lower maintenance cost and is revolutionary in future. However, past researches shows the lack of...

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Main Author: Ker, Hin Ho
Other Authors: Fei Duan
Format: Final Year Project
Language:English
Published: 2018
Subjects:
Online Access:http://hdl.handle.net/10356/74201
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-742012023-03-04T19:01:10Z Study of the thermoacoustic effect in an oscillating flow Ker, Hin Ho Fei Duan School of Mechanical and Aerospace Engineering DRNTU::Science::Physics::Heat and thermodynamics Thermoacoustic engines have received many attention because of the lack of moving parts and environmental benefits. The lack of moving parts means less mechanical damage, lesser wear and tear leading to lower maintenance cost and is revolutionary in future. However, past researches shows the lack of information of such engine when performing at high amplitudes. Thus, the present experimental study studies the thermoacoustic effect in an oscillating flow. It will be conducted through a model of thermoacoustic refrigerator, with a loudspeaker powered by an amplifier into a duct, using air as the medium. The sound produced by the loudspeaker causes vibration and pressure in the duct. The experiment studies pressure variation throughout the duct. The resonance frequency is first determined, in order to perform the experiment at the highest amplitude and subsequent test will be performed at the resonance frequency. Stack will then be introduced to study the thermoacoustic effect with the generation of a temperature difference from the supplied acoustic energy. And lastly, the position of the stack will be varied to determine the effect of position on stack performance. Future work should be conducted to understand the flow field happening inside the stack so as to improve the efficiency of thermoacoustic devices. Bachelor of Engineering (Aerospace Engineering) 2018-05-08T01:38:09Z 2018-05-08T01:38:09Z 2018 Final Year Project (FYP) http://hdl.handle.net/10356/74201 en Nanyang Technological University 81 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Science::Physics::Heat and thermodynamics
spellingShingle DRNTU::Science::Physics::Heat and thermodynamics
Ker, Hin Ho
Study of the thermoacoustic effect in an oscillating flow
description Thermoacoustic engines have received many attention because of the lack of moving parts and environmental benefits. The lack of moving parts means less mechanical damage, lesser wear and tear leading to lower maintenance cost and is revolutionary in future. However, past researches shows the lack of information of such engine when performing at high amplitudes. Thus, the present experimental study studies the thermoacoustic effect in an oscillating flow. It will be conducted through a model of thermoacoustic refrigerator, with a loudspeaker powered by an amplifier into a duct, using air as the medium. The sound produced by the loudspeaker causes vibration and pressure in the duct. The experiment studies pressure variation throughout the duct. The resonance frequency is first determined, in order to perform the experiment at the highest amplitude and subsequent test will be performed at the resonance frequency. Stack will then be introduced to study the thermoacoustic effect with the generation of a temperature difference from the supplied acoustic energy. And lastly, the position of the stack will be varied to determine the effect of position on stack performance. Future work should be conducted to understand the flow field happening inside the stack so as to improve the efficiency of thermoacoustic devices.
author2 Fei Duan
author_facet Fei Duan
Ker, Hin Ho
format Final Year Project
author Ker, Hin Ho
author_sort Ker, Hin Ho
title Study of the thermoacoustic effect in an oscillating flow
title_short Study of the thermoacoustic effect in an oscillating flow
title_full Study of the thermoacoustic effect in an oscillating flow
title_fullStr Study of the thermoacoustic effect in an oscillating flow
title_full_unstemmed Study of the thermoacoustic effect in an oscillating flow
title_sort study of the thermoacoustic effect in an oscillating flow
publishDate 2018
url http://hdl.handle.net/10356/74201
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