Investigation of a thermo-acoustically driven linear alternator

CM Johnson, PH Riley, CR Saha

Research output: Contribution to conferencePoster

Abstract

This paper presents a simplified theoretical model of a standing wave thermo-acoustically driven electromagnetic linear alternator. Results from the theoretical model are compared with an experimental device in order to evaluate the accuracy of the model. The measured impedance and phase response of the linear alternator show distinct evidence of a thermo-acoustic interaction which is consistent with the predictions of the model. The measured results show that significant mechanical loss is present in the system which prevents the rig from self-starting. High diaphragm stiffness and low suspension loss are identified as key alternator design parameters.
Original languageEnglish
Publication statusPublished - Sep 2008
EventU21 International Conference on Energy Technologies and Policy - Birmingham, United Kingdom
Duration: 8 Sep 200810 Sep 2008

Conference

ConferenceU21 International Conference on Energy Technologies and Policy
CountryUnited Kingdom
CityBirmingham
Period8/09/0810/09/08

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Diaphragms
Acoustics
Stiffness

Cite this

Johnson, CM., Riley, PH., & Saha, CR. (2008). Investigation of a thermo-acoustically driven linear alternator. Poster session presented at U21 International Conference on Energy Technologies and Policy, Birmingham, United Kingdom.

Investigation of a thermo-acoustically driven linear alternator. / Johnson, CM; Riley, PH; Saha, CR.

2008. Poster session presented at U21 International Conference on Energy Technologies and Policy, Birmingham, United Kingdom.

Research output: Contribution to conferencePoster

Johnson, CM, Riley, PH & Saha, CR 2008, 'Investigation of a thermo-acoustically driven linear alternator' U21 International Conference on Energy Technologies and Policy, Birmingham, United Kingdom, 8/09/08 - 10/09/08, .
Johnson CM, Riley PH, Saha CR. Investigation of a thermo-acoustically driven linear alternator. 2008. Poster session presented at U21 International Conference on Energy Technologies and Policy, Birmingham, United Kingdom.
Johnson, CM ; Riley, PH ; Saha, CR. / Investigation of a thermo-acoustically driven linear alternator. Poster session presented at U21 International Conference on Energy Technologies and Policy, Birmingham, United Kingdom.
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abstract = "This paper presents a simplified theoretical model of a standing wave thermo-acoustically driven electromagnetic linear alternator. Results from the theoretical model are compared with an experimental device in order to evaluate the accuracy of the model. The measured impedance and phase response of the linear alternator show distinct evidence of a thermo-acoustic interaction which is consistent with the predictions of the model. The measured results show that significant mechanical loss is present in the system which prevents the rig from self-starting. High diaphragm stiffness and low suspension loss are identified as key alternator design parameters.",
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AB - This paper presents a simplified theoretical model of a standing wave thermo-acoustically driven electromagnetic linear alternator. Results from the theoretical model are compared with an experimental device in order to evaluate the accuracy of the model. The measured impedance and phase response of the linear alternator show distinct evidence of a thermo-acoustic interaction which is consistent with the predictions of the model. The measured results show that significant mechanical loss is present in the system which prevents the rig from self-starting. High diaphragm stiffness and low suspension loss are identified as key alternator design parameters.

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