A novel non-linear one-dimensional unsteady model for thermoacoustic engine and its application on a looped traveling-wave thermoacoustic engine
Sign Up to like & getrecommendations! Published in 2021 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2021.108136
Abstract: Abstract A novel non-linear one-dimensional unsteady model (1DUM) for thermoacoustic engine is proposed to study on the working mechanism of thermoacoustic engines, with its focus on the unsteady onset process. Numerical simulation of a looped… read more here.
Keywords: non linear; process; novel non; model ... See more keywords
Theoretical performance characteristics of a travelling-wave phase-change thermoacoustic engine for low-grade heat recovery
Sign Up to like & getrecommendations! Published in 2020 at "Applied Energy"
DOI: 10.1016/j.apenergy.2019.114377
Abstract: There is a critical need for environmentally benign, cost-effective technologies to utilize the vast amount of untapped low-grade heat sources. In this work, we report a novel travelling-wave thermoacoustic engine, which incorporates phase change of… read more here.
Keywords: low grade; grade heat; thermoacoustic engine; phase change ... See more keywords
Comprehensive performance improvement of standing wave thermoacoustic engine with converging stack: Thermodynamic analysis and optimization
Sign Up to like & getrecommendations! Published in 2019 at "Applied Thermal Engineering"
DOI: 10.1016/j.applthermaleng.2019.114096
Abstract: Abstract In a thermoacoustic engine, the ratio of the plate spacing to the thermal penetration depth crucial to the performance and efficiency of thermoacoustic conversion. However, the temperature gradient in the regenerator or stack causes… read more here.
Keywords: performance; stack; converging stack; thermoacoustic engine ... See more keywords
Design and experimental evaluation of a travelling wave thermoacoustic engine
Sign Up to like & getrecommendations! Published in 2020 at "Energy Reports"
DOI: 10.1016/j.egyr.2020.11.002
Abstract: Abstract In a thermoacoustic engine, acoustic impedance plays a key role to improve the system performance. A matching stub is a component which can be applied to adjust the acoustic impedance. In this study, the… read more here.
Keywords: experimental evaluation; engine; travelling wave; design experimental ... See more keywords
Bistability and triggering in a thermoacoustic engine: A numerical study
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Heat and Mass Transfer"
DOI: 10.1016/j.ijheatmasstransfer.2020.119951
Abstract: Abstract Although bistability and triggering in a thermoacoustic engine have been observed experimentally in the literature, the underlying physics behind these nonlinear phenomena is not well understood. In this paper, computational fluid dynamics (CFD) simulations… read more here.
Keywords: thermoacoustic engine; triggering thermoacoustic; temperature; bistability triggering ... See more keywords