Results 21 to 30 of about 219 (182)

Exploration of a Model Thermoacoustic Turbogenerator with a Bidirectional Turbine

open access: yesPolish Maritime Research, 2023
The utilisation of the thermal emissions of modern ship power plants requires the development and implementation of essentially new methods of using low-temperature waste heat.
Korobko Volodymyr   +2 more
doaj   +1 more source

Design and experimental evaluation of a travelling wave thermoacoustic engine

open access: yesEnergy Reports, 2020
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.
Patcharin Saechan, Isares Dhuchakallaya
doaj   +1 more source

Liquid metal thermoacoustic engine [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1986
A liquid metal thermoacoustic engine is studied both theoretically and experimentally. This type of engine promises to produce large quantities of electrical energy from heat at modest efficiency with no moving parts except the acoustic oscillations in the liquid metal.
Swift, G.W.   +2 more
openaire   +1 more source

Experimental results of a waste-heat powered thermoacoustic refrigeration system for ships

open access: yesScience and Technology for Energy Transition, 2023
Greenhouse gas emissions are a major concern for maritime transport. The International Maritime Organization (IMO) presents Waste Heat Recovery Systems (WHRS) from engine exhaust gas as a viable solution to improve energy utilization and reduce ...
Thiaucourt Jonas   +2 more
doaj   +1 more source

Thermoacoustic Heat Engine

open access: yesJurnal Teknologi, 2012
Kertas kerja ini memperkenalkan teknologi terbaru dalam kuasa bendalir iaitu termoakustik, fenomenon yang disebabkan oleh interaksi pepejal-bendalir. Secara umumnya, termoakustik boleh dibahagi kepada dua kategori. Kategori pertama ialah enjin haba, di mana kuasa akustik dapat dijana hasil daripada gelombang yang wujud disebabkan oleh perbezaan ...
N. Mohd. Ghazali, Farid Nasir Ani
openaire   +2 more sources

Heat-driven Thermoacoustic Cooling Technology: A Review and Perspective

open access: yesZhileng xuebao, 2022
Heat-driven thermoacoustic cooling technology utilizes the acoustic power generated by a thermoacoustic engine to drive a thermoacoustic cooler to realize thermal–acoustic–cooling energy conversion.
Xu Jingyuan, Luo Ercang
doaj  

Numerical and experimental investigation on the effect of regenerator mesh size on performance of the traveling wave thermoacoustic-stirling heat engine

open access: yesCase Studies in Thermal Engineering, 2020
Traveling wave thermoacoustic-Stirling heat engine is a unique device that is used to convert heat energy to acoustic work. In this article, the thermoacoustic engine is modeled, manufactured and tested.
Mahesh Krishna Gaikwad, Pradeep A. Patil
doaj   +1 more source

Optimal Control of the Viscous Wave Equation via the Pontryagin Maximum Principle

open access: yesNumerical Methods for Partial Differential Equations, Volume 42, Issue 3, May 2026.
ABSTRACT A tracking‐type optimal control problem governed by the viscous wave equation with a distributed‐source control and L2$$ {L}^2 $$‐L1$$ {L}^1 $$ control costs is investigated. For this class of PDE‐constrained linear‐convex problems, a Pontryagin maximum principle (PMP) in the PDE setting is derived, and it is shown that the pointwise ...
A. Borzì, S. Roy
wiley   +1 more source

Laser‐Architected Shape‐Configurable Vertical Graphene Thermoacoustic Loudspeakers for 3D Acoustic Emission

open access: yesAdvanced Science, Volume 13, Issue 18, 27 March 2026.
A dual‐laser‐architected vertical graphene film enables high‐performance, morphologically reconfigurable thermoacoustic loudspeakers.The vertically aligned graphene structures combine efficient heat dissipation, thickness‐independent SPL, and kirigami‐driven 3D transformations, offering shape‐programmable, stretchable, and omnidirectional acoustic ...
TaeGyeong Lim   +11 more
wiley   +1 more source

Study of Standing-Wave Thermoacoustic Electricity Generators for Low-Power Applications

open access: yesApplied Sciences, 2018
This paper is concerned with the study of low-cost, low-power thermoacoustic electricity generators. Based on target electrical output power values of 50 and 100 W, three standing wave prototypes (of both one-stage and two-stage prototypes) integrating a
Antonio Piccolo
doaj   +1 more source

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