A toroidal-topology traveling-wave thermoacoustic electric generator (TWTEG) is developed. It consists of a traveling-wave thermoacoustic engine, two linear alternators connected in parallel, and sets of variable resistive-capacitive (R-C) external electric loads, in conjunction with accessories and instrumentation required for experimental investigations. The working medium is helium with a static absolute pressure that varies from 25 bars to 30 bars. A detailed description of the thermal design of the heat exchangers is presented. Sustainable operation of the TWTEG is achieved over a range of external R-C loads at different imposed hot-side temperatures and mean gas pressures. The performance parameters are measured for different experimental conditions and compared with a developed lumped-element model. The comparison between the experimental results and predictions reveals a good agreement. The impedance matching between the thermoacoustic engine and the linear alternators is investigated experimentally over a wide range of external R-C loads. The external R-C loads play a crucial role in the operation of the TWTEG. The mean gas pressure changes the operating frequency; however, it has no significant influence on the operating range of the TWTEG on the R-C load map. Increasing the hot-side temperature improves the thermal-to-acoustic efficiency and extends the operating region into larger regions.
Skip Nav Destination
Article navigation
September 2024
September 16 2024
Operation map of a traveling-wave thermoacoustic electric generator with variable resistive-capacitive electric loads
Abdelmaged H. Ibrahim
;
Abdelmaged H. Ibrahim
1
School of Science and Engineering, American University in Cairo
, New Cairo 11835, Egypt
2
Mechanical Power Department, Faculty of Engineering, Cairo University
, Giza 12613, Egypt
Search for other works by this author on:
Khaled Elbeltagy;
Khaled Elbeltagy
1
School of Science and Engineering, American University in Cairo
, New Cairo 11835, Egypt
Search for other works by this author on:
Islam Ramadan
;
Islam Ramadan
a)
3
Institut Pprime, CNRS—Université de Poitiers—ISAE-ENSMA, ENSIP
, 6 rue Marcel Doré, B17, 86000 Poitiers, France
Search for other works by this author on:
Omar A. Ismail;
Omar A. Ismail
1
School of Science and Engineering, American University in Cairo
, New Cairo 11835, Egypt
Search for other works by this author on:
M. A. Serag-Eldin;
M. A. Serag-Eldin
1
School of Science and Engineering, American University in Cairo
, New Cairo 11835, Egypt
Search for other works by this author on:
Ehab Abdel-Rahman
Ehab Abdel-Rahman
1
School of Science and Engineering, American University in Cairo
, New Cairo 11835, Egypt
Search for other works by this author on:
a)
Email: [email protected]
J. Acoust. Soc. Am. 156, 1757–1768 (2024)
Article history
Received:
March 12 2024
Accepted:
August 29 2024
Citation
Abdelmaged H. Ibrahim, Khaled Elbeltagy, Islam Ramadan, Omar A. Ismail, M. A. Serag-Eldin, Ehab Abdel-Rahman; Operation map of a traveling-wave thermoacoustic electric generator with variable resistive-capacitive electric loads. J. Acoust. Soc. Am. 1 September 2024; 156 (3): 1757–1768. https://doi.org/10.1121/10.0028678
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
78
Views
Citing articles via
All we know about anechoic chambers
Michael Vorländer
A survey of sound source localization with deep learning methods
Pierre-Amaury Grumiaux, Srđan Kitić, et al.
Does sound symbolism need sound?: The role of articulatory movement in detecting iconicity between sound and meaning
Mutsumi Imai, Sotaro Kita, et al.
Related Content
Study of nonlinear processes of a large experimental thermoacoustic-Stirling heat engine by using computational fluid dynamics
J. Appl. Phys. (October 2007)
Multi-method modeling to predict the onset conditions and resonance of the piezo coupled thermoacoustic engine
J. Acoust. Soc. Am. (June 2022)
Beating effect between a thermoacoustic source and its mechanical partner
J. Appl. Phys. (December 2015)
Gap seal dissipation in linear alternators
J. Acoust. Soc. Am. (April 2015)