Results 81 to 90 of about 11,841 (159)

On the Frequency Response of Nanostructured Thermoacoustic Loudspeakers

open access: yesNanomaterials, 2018
In this work, we investigate the thermal and acoustic frequency responses of nanostructured thermoacoustic loudspeakers. An opposite frequency dependence of thermal and acoustic responses was found independently of the device substrate (Kapton and glass)
Paolo La Torraca   +6 more
doaj   +1 more source

Experimental Performance Evaluation of a Thermoacoustic Stirling Engine with a Low-Cost Arduino-Based Acquisition System

open access: yesApplied Sciences
Existing thermoacoustic dynamic measurement instrumentation is typically expensive and relies on proprietary designs, sensors, and acquisition equipment.
Carmen Iniesta   +4 more
doaj   +1 more source

Electromagnetic–Acoustic Sensing for Biomedical Applications

open access: yesSensors, 2018
This paper reviews the theories and applications of electromagnetic–acoustic (EMA) techniques (covering light-induced photoacoustic, microwave-induced thermoacoustic, magnetic-modulated thermoacoustic, and X-ray-induced thermoacoustic) belonging to
Siyu Liu   +3 more
doaj   +1 more source

Frequency dependence of microwave thermo-acoustic imaging of breast tumors and microcalcifications

open access: yesJournal of Engineering and Applied Science
Photoacoustic imaging has established itself as a prominent medical imaging modality. However, its efficacy is limited by its shallow penetration depth.
Mohamed A. Oransa   +2 more
doaj   +1 more source

Investigation on the stability of the Rijke-type thermoacoustic system with an axially distributed heat source

open access: yesJournal of Low Frequency Noise, Vibration and Active Control
Due to the incurred damages to the combustors, large-amplitude self-sustained thermoacoustic oscillations are unwanted in many propulsion systems, such as liquid/solid rocket motors and aero-engines.
Kai Pang   +4 more
doaj   +1 more source

Advances and Challenges in Thermoacoustic Network Modeling for Hydrogen and Ammonia Combustors

open access: yesEnergies
The transition to low-carbon energy systems has heightened interest in hydrogen and ammonia as sustainable alternatives to traditional hydrocarbon fuels.
Seungmin Guk   +3 more
doaj   +1 more source

PENGARUH PANJANG STACK SELUBUNG KABEL TERHADAP PERUBAHAN SUHU PADA SISTEM PENDINGIN TERMOAKUSTIK

open access: yesSpektra: Jurnal Fisika dan Aplikasinya, 2017
Research on environmentally friendly thermo-acoustic coolants uses a heat exchanger from the cable sheath material. The resonator tube used in the thermoelectric cooler is a 5.25 cm diameter PVC (polyvinyl chloride) tube with a length of 87 cm ...
Indah Kharismawati, Hanif Rafika Putri
doaj   +1 more source

NUMERICAL MODELLING OF THERMOACOUSTIC PHENOMENON AS CONTRIBUTION TO THERMOACOUSTIC ENGINE MODEL

open access: yesTASK Quarterly, 2010
The presented paper shows our first step into the numerical modelling of the thermoacoustic phenomenon. The thermoacoustic effect has a great application potential, for instance, in thermoacoustic engines or thermoacoustic mixture separation.
LESZEK REMIORZ   +2 more
doaj  

Harnessing sound waves for sustainable energy: Advancements and challenges in thermoacoustic technology

open access: yesEnergy Nexus
In the face of urgent global environmental challenges, the pursuit of sustainable technologies has become of utmost importance. Thermoacoustic technology has emerged as a promising energy conversion method with potential applications in various domains ...
Ussama Ali, Omar Al-Mufti, Isam Janajreh
doaj   +1 more source

Study on Coupling in a Thermoacoustic Driven Pulse Tube Refrigerator

open access: yesZhileng xuebao, 2018
Thermoacoustic-driven pulse tube refrigerators are usually coupled directly or by long tubes called acoustic amplifiers. With these coupling methods, the efficiency of the whole system is quite low because of the nonideal acoustic field and flow losses ...
Hu Jiangfeng   +4 more
doaj  

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