Results 91 to 100 of about 621 (130)
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A thermoacoustic Stirling heat engine
Nature, 1999Electrical and mechanical power, together with other forms of useful work, are generated worldwide at a rate of about 1012 watts, mostly using heat engines. The efficiency of such engines is limited by the laws of thermodynamics and by practical considerations such as the cost of building and operating them.
S. Backhaus, G. W. Swift
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A thermoacoustic-Stirling heat engine: Detailed study
The Journal of the Acoustical Society of America, 2000A new type of thermoacoustic engine based on traveling waves and ideally reversible heat transfer is described. Measurements and analysis of its performance are presented. This new engine outperforms previous thermoacoustic engines, which are based on standing waves and intrinsically irreversible heat transfer, by more than 50%.
, Backhaus, , Swift
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Output characteristics of Stirling thermoacoustic engine
Energy Conversion and Management, 2008Abstract A thermoacoustic engine (TE), which converts thermal energy into acoustic power by the thermoacoustic effect, shows several advantages due to the absence of moving parts, such as high reliability and long lifetime associated with reduced manufacturing costs. Power output and efficiency are important criteria of the performance of a TE.
Daming Sun +4 more
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The performance of a high-frequency thermoacoustic-Stirling engine
The Journal of the Acoustical Society of America, 2003A thermoacoustic-Stirling engine that operates at 400 Hz with a working fluid of 1-MPa helium is constructed. For proper acoustic phasing in this engine’s regenerator, an acoustic power feedback path exists in the form of an annulus surrounding the regenerator. This feedback path is obtained by suspending an insulated, stainless steel sleeve containing
Kevin J. Bastyr, Robert M. Keolian
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Low temperature differential thermoacoustic Stirling engine
Applied Physics Letters, 2010To what extent can we lower the critical temperature ratio (CTR) necessary to start a thermoacoustic engine? We present an experimental method for predicting the CTR before the temperature ratio arrives at it using quality factor measurements. Based on the experimental quality factors, we tried to decrease the CTR of a thermoacoustic Stirling engine ...
Tetsushi Biwa +2 more
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A pistonless Stirling engine—A new direction in thermoacoustics
The Journal of the Acoustical Society of America, 1999Due to its thermodynamic reversibility, the Stirling cycle has an inherent advantage in thermal efficiency over the standard, irreversible standing-wave thermoacoustic cycle. The main disadvantage of the Stirling cycle has been the need for high-pressure, sliding piston seals. Building significantly on the ideas of Ceperley [J. Acoust. Soc. Am.
Scott N. Backhaus, Gregory W. Swift
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Study of a thermoacoustic-Stirling engine connected to a piston-crank-flywheel assembly
The Journal of the Acoustical Society of America, 2021This paper deals with the theoretical description of self-sustained oscillations resulting from the coupling of a piston-crank-flywheel assembly with a thermoacoustic-Stirling prime mover. The governing equations of the piston-flywheel motion are coupled to those of the thermoacoustic system, which is described in the time domain through a rational ...
Guillaume, Penelet +2 more
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A numerical simulation method and analysis of a complete thermoacoustic-Stirling engine
Ultrasonics, 2006Thermoacoustic prime movers can generate pressure oscillation without any moving parts on self-excited thermoacoustic effect. The details of the numerical simulation methodology for thermoacoustic engines are presented in the paper. First, a four-port network method is used to build the transcendental equation of complex frequency as a criterion to ...
Hong, Ling, Ercang, Luo, Wei, Dai
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Experimental study on a wet thermoacoustic Stirling engine for water pumping
Applied Thermal EngineeringShijie Sheng, Tianbiao He
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High-Power Thermoacoustic Stirling Heat Engine Results
9th Annual International Energy Conversion Engineering Conference, 2011We are developing a thermoacoustic Stirling heat engine (TASHE) to drive a pulse tube refrigerator (PTR) and electrical linear alternator for instrument cooling and power generation on a Venus lander. The TASHE will produce acoustic (PV) power and deliver it both to the linear alternator to generate electrical power and to the PTR to generate ...
Mark Haberbusch, Chinh Nguyen
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