Space thermoacoustic radio-isotopic power system: SpaceTRIPS

Alemany, A.; François, M.X.; Blok, Kees de; Roux, J.P.; Poli, G.; Zeminiani, Eleonnora; Gaia, Enrico; Jeantet, Phillipe; Roy, Emmanuel; Chillet, Christian; Freiberg, Janis; Nikoluskins, Raimonds; Gerbeth, Günter; Eckert, Sven

doi:10.3990/2.284

Cited by 3 publications

(8 citation statements)

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“…Therefore, thermoacoustic engines with MHD generators are well suited for applications where no maintenance is possible, such as in outer space. 84,85 The working principle and details of both the inductive and conductive MHD transducers will be treated in Sec. IV.…”

Section: Magnetohydrodynamic Devicesmentioning

confidence: 99%

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Review on the conversion of thermoacoustic power into electricity

Timmer

Blok²,

Meer

2018

The Journal of the Acoustical Society of America

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Thermoacoustic engines convert heat energy into high amplitude acoustic waves and subsequently into electric power. This article provides a review of the four main methods to convert the (thermo)acoustic power into electricity. First, loudspeakers and linear alternators are discussed in a section on electromagnetic devices. This is followed by sections on piezoelectric transducers, magnetohydrodynamic generators, and bidirectional turbines. Each segment provides a literature review of the given technology for the field of thermoacoustics, focusing on possible configurations, operating characteristics, output performance, and analytical and numerical methods to study the devices. This information is used as an input to discuss the performance and feasibility of each method, and to identify challenges that should be overcome for a more successful implementation in thermoacoustic engines. The work is concluded by a comparison of the four technologies, concentrating on the possible areas of application, the conversion efficiency, maximum electrical power output and more generally the suggested focus for future work in the field.

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Section: Magnetohydrodynamic Devicesmentioning

confidence: 99%

“…94 As an alternative, one could use a gas for the acoustic part of the engine and an electrically conducting fluid for the MHD generator. 90,84,97 Separating the two fluids can for example be done by gravity using a Ushaped tube. 94 A downside of such designs is that there is a gas-fluid interface, as shown in Fig.…”

Section: A Configurationsmentioning

confidence: 99%

Review on the conversion of thermoacoustic power into electricity

Timmer

Blok²,

Meer

2018

The Journal of the Acoustical Society of America

Self Cite

View full text Add to dashboard Cite

show abstract

“…Therefore, thermoacoustic engines with MHD generators are well suited for applications where no maintenance is possible, such as in outer space. 91,92 The working principle and details of both the inductive and conductive MHD transducers will be treated in Sec. 2.3.1, along with different working fluids that have been used in thermoacoustics.…”

Section: Magnetohydrodynamic Devicesmentioning

confidence: 99%

“…92,96,97 Independent of the configuration, the electrically conducting working fluid mostly used is liquid sodium. 91,98,99 This is a suitable working fluid due to its relatively low density and high electrical conductivity, which makes it sensitive to the influence of a magnetic field. 97 Similarly, a saturated sodium bicarbonate aqueous solution is experimentally shown to be suitable as well.…”

Section: Configurationsmentioning

confidence: 99%