Ultrasonic thermoacoustic energy converter

Autor:	Orest G. Symko, Myra Flitcroft
Rok vydání:	2013
Předmět:	Materials science Acoustics and Ultrasonics Volume (thermodynamics) Acoustics Range (aeronautics) Thermoacoustics Miniaturization Ultrasonic sensor Thermoacoustic heat engine Scaling Heat engine
Zdroj:	Ultrasonics. 53:672-676
ISSN:	0041-624X
DOI:	10.1016/j.ultras.2012.10.003
Popis:	Thermoacoustic prime movers have been developed for operation in the low ultrasonic frequency range by scaling down the device size. The developed engines operate at frequencies up to 23 kHz. They are self-sustained oscillators whose dimensions scale inversely with operating frequency. The smallest one being 3.4 mm long with a 1 mm diameter bore, i.e. the engine inner volume of 2.67 mm3. The generated sound levels reached intensities in the range of 143–150 dB in the low ultrasonic range. The miniaturization of thermoacoustic engines will lead to the development of device arrays.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3ff47d79659eb373b196e5e00b6ca78 https://doi.org/10.1016/j.ultras.2012.10.003 Zobrazit plný text záznamu Full Text from ScienceDirect