Generator Performance of a Disk CCMHD Generator with Inlet Swirl

Harada, Nobuhiro; Okamura, Tomonori; Kizuka, Nobuaki; Yamasaki, Hiroyuki; Shioda, Susumu

doi:10.1541/ieejpes1990.114.6_626

Cited by 2 publications

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“…(8.3-9.1 4. 3 Behaviors of plasma Figure 7 shows the plot of the measured result of the electron temperatures with respect to the seed fiactions. In this figure, the region of full ionization of seed is also shown at the same time, which is determined by calculating the relation between the electron temperature and the electrical conductivity by assuming Saha equilibrium.…”

Section: Fluid Characteristicsmentioning

confidence: 99%

“…Furthermore, an enthalpy extraction ratio of 32.5 percent has also been recorded in a disk generator using helium [3]. Thus, the improvement of power generation performance has been made by experimental studies; however, at the same time, it has been suggested by the analyses of power generation plants that the combined cycle composed of an MHD generator and a gas turbine will offer high thermal efficiency (55 ,.. 57 percent) [4].…”

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confidence: 99%

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Characteristics of flow and plasma under high MHD interaction in nonequilibrium disk MHD generator using argon

Tsuji

Okubo

Yamasaki

et al. 1996

Electrical Engineering Japan

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SUMMARYResults of experimental studies on behavior of a supersonic flow and of a nonequilibrium plasma in a disk MHD generator are presented. The experiments with cesium seeded argon were carried out under high MHD interaction conditions. Effects of seed fractions on static pressure distributions, flow Mach numbers, electron temperatures and uniformity of discharge in the disk MHD channel were investigated. The results have shown that the flow is kept supersonic throughout the disk MHD channel when a sufficient Joule heating exists in a supersonic nozzle and the seed is filly ionized. It was found that there was an optimum seed fraction at which the power output became maximum and, at the same time, the seed was fully ionized. Furthermore, an almost uniform discharge due to the f i l l ionization of seed was observed. It is noted that enthalpy extractions and adiabatic efficiencies were increased remarkably, and the highest enthalpy extraction of 26.5 percent was achieved for cesium seeded argon. However, adiabatic efficiencies remained still low due to large pressure losses.

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Section: Fluid Characteristicsmentioning

confidence: 99%

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confidence: 99%

Characteristics of flow and plasma under high MHD interaction in nonequilibrium disk MHD generator using argon

Tsuji

Okubo

Yamasaki

et al. 1996

Electrical Engineering Japan

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Application of Magnetohydrodynamics (MHD) and Recent Research Trend

信弘

2007

IEEJ Trans. PE

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As the applications of Magnetohydrodynamic (MHD) energy conversion, research and development for highefficiency and low emission electric power generation system, MHD accelerations and/or MHD thrusters, and flow control around hypersonic and re-entry vehicles are introduced. For closed cycle MHD power generation, high-efficiency MHD single system is the most hopeful system and space power system using mixed inert gas (MIG) working medium is proposed. For open cycle MHD, high-efficiency coal fired MHD system with CO 2 recovery has been proposed. As inverse process of MHD power generation, MHD accelerators/thrusters are expected as the next generation propulsion system. Heat flux reduction to protect re-entry vehicles is expected by an MHD process for safety return from space missions.

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Generator Performance of a Disk CCMHD Generator with Inlet Swirl

Cited by 2 publications

References 1 publication

Characteristics of flow and plasma under high MHD interaction in nonequilibrium disk MHD generator using argon

Characteristics of flow and plasma under high MHD interaction in nonequilibrium disk MHD generator using argon

Application of Magnetohydrodynamics (MHD) and Recent Research Trend

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