Review of Energy Conversion Technology using Magnetohydrodynamics

Sasaki, Toru; Harada, Nobuhiro; Kikuchi, Takashi; Takahashi, Keníchi

doi:10.1541/ieejpes.136.769

Cited by 3 publications

(1 citation statement)

References 8 publications

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“…Magnetohydrodynamic (MHD) generation is a method to directly extract electric power from plasma and other working fluids ; in so doing, operation can be performed at much higher temperature as compared to turbine generators, and the use of MHD promises realization of high‐efficiency power plants . Output of MHD generators heavily depends on electric conductivity of the working fluid; one of the ways to increase conductivity is adding alkali metals with low ionization energy as a seed material to working fluid .…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on Periodic Structure Evolution of Output Power in MHD Generator by Using Pulse‐Assisted Ionization Discharge

Yamazaki

Takahashi

Sasaki

et al. 2018

Electrical Engineering Japan

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SUMMARY A pulse‐assisted ionization discharge applied to a magnetohydrodynamic (MHD) generator is proposed as a technique to increase an electrical conductivity of working fluid. In this study, a periodic structure of output power in the MHD generator by using pulse‐assisted ionization discharge was evaluated. As a result, the discharge electrode length and the velocity of working fluid affect the discharge current distribution. The periodic structure of output power was observed in the several conditions. When the velocity of working fluid is roughly same as the sound speed, the periodic structure of output power was not observed.

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Section: Introductionmentioning

confidence: 99%

Numerical Study on Periodic Structure Evolution of Output Power in MHD Generator by Using Pulse‐Assisted Ionization Discharge

Yamazaki

Takahashi

Sasaki

et al. 2018

Electrical Engineering Japan

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Numerical Study on Periodic Structure Evolution of Output Power in MHD Generator by using Pulse-assisted Ionization Discharge

Yamazaki¹,

Takahashi²,

Sasaki³

et al. 2018

IEEJ Trans. PE

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High-Temperature Behavior, Oxygen Transport Properties, and Electrochemical Performance of Cu-Substituted Nd1.6Ca0.4NiO4+δ Electrode Materials

et al. 2022

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In this study, Nd1.6Ca0.4Ni1−yCuyO4+δ-based electrode materials for intermediate temperature solid oxide fuel cells (IT-SOFCs) are investigated. Materials of the series (y = 0–0.4) are obtained by pyrolysis of glycerol-nitrate compositions. The study of crystal structure and high-temperature stability in air and under low oxygen partial pressure atmospheres are performed using high-resolution neutron and in situ X-ray powder diffraction. All the samples under the study assume a structure with Bmab sp.gr. below 350 °C and with I4/mmm sp.gr. above 500 °C. A transition in the volume thermal expansion coefficient values from 7.8–9.3 to 9.1–12.0 × 10−6, K−1 is observed at approximately 400 °C in air and 500 °C in helium.The oxygen self-diffusion coefficient values, obtained using isotope exchange, monotonically decrease with the Cu content increasing, while concentration dependence of the charge carriers goes through the maximum at x = 0.2. The Nd1.6Ca0.4Ni0.8Cu0.2O4+δ electrode materialdemonstrates chemical compatibility and superior electrochemical performance in the symmetrical cells with Ce0.8Sm0.2O1.9, BaCe0.8Sm0.2O3−δ, BaCe0.8Gd0.19Cu0.1O3−δ and BaCe0.5Zr0.3Y0.1Yb0.1O3−δ solid electrolytes, potentially for application in IT-SOFCs.

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Review of Energy Conversion Technology using Magnetohydrodynamics

Cited by 3 publications

References 8 publications

Numerical Study on Periodic Structure Evolution of Output Power in MHD Generator by Using Pulse‐Assisted Ionization Discharge

Numerical Study on Periodic Structure Evolution of Output Power in MHD Generator by Using Pulse‐Assisted Ionization Discharge

Numerical Study on Periodic Structure Evolution of Output Power in MHD Generator by using Pulse-assisted Ionization Discharge

High-Temperature Behavior, Oxygen Transport Properties, and Electrochemical Performance of Cu-Substituted Nd1.6Ca0.4NiO4+δ Electrode Materials

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