Preliminary Experimental Investigation on MHD Power Generation Using Seeded Supersonic Argon Flow as Working Fluid

Li, Yiwen; Li, Yinghong; Lu, Haoyu; Zhu, Tao; Zhang, Bailing; Chen, Feng; Zhao, Xiaohu

doi:10.1016/s1000-9361(11)60082-4

Cited by 17 publications

(9 citation statements)

References 11 publications

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“…3, it is believed that an appropriate σeff can be achieved with a high SF, and a relatively high power generation performance is also obtained. With the condition of SF=6.5×10 -4 and 9.5×10 -4 , the EE calculated here and the EE from reference [8] agree well. This suggests that the plasma is stable as discussed from the calculation in the case of Te implementing the seed complete ionization.…”

Section: Trang 58supporting

confidence: 73%

“…Here, the highest value of EE is as low as 6% and 8% when SF is 2×10 -4 and 4×10 -4 respectively. EE is also obtained relatively low value of 7~12% from the experiment in [8]. However, there is a trend that the calculated value is slightly higher than the experimental value.…”

Section: Seed Fractionmentioning

confidence: 68%

“…In addition, the plot points (,,) in the same Fig. 3(a) is the experimental value referred in [8]. From the calculation results with the condition of SF=2×10 -4 shown in Fig.…”

Section: Seed Fractionmentioning

confidence: 97%

“…The dependence of seed fraction (SF) on the electron temperature Te is described experimentally in [8] and shown in Fig. 2.…”

Section: Seed Fractionmentioning

confidence: 99%

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Analyses of the power generation performance and the non-equilibrium plasma of a disk MHD generator

Le¹

2016

Sci. Tech. Dev. J.

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Recently, closed cycle MHD power generation system studies have been focused on improving the isentropic efficiency and the enthalpy extraction ratio. By reducing the crosssection area ratio of the disk MHD generator, it is believed that a high isentropic efficiency can be achieved with the same enthalpy extraction. In this study, the results relating to a plasma state which takes into account the ionization instability of non-equilibrium seeded plasma is added to the theoretical prediction of the relationship between enthalpy extraction and isentropic efficiency. As a result, the electron temperature, which reaches the seed complete ionization state without the growth of ionization instability, can be realized at a relatively high seed fraction condition. However, the upper limit of the power generation performance is suggested to remain lower than the value expected in the low seed fraction condition. It is also suggested that a higher power generation performance may be obtained by implementing the electron temperature range, which reaches the seed complete ionization state at a low seed fraction.

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Section: Trang 58supporting

confidence: 73%

Section: Seed Fractionmentioning

confidence: 68%

“…In addition, the plot points (,,) in the same Fig. 3(a) is the experimental value referred in [8]. From the calculation results with the condition of SF=2×10 -4 shown in Fig.…”

Section: Seed Fractionmentioning

confidence: 97%

“…The dependence of seed fraction (SF) on the electron temperature Te is described experimentally in [8] and shown in Fig. 2.…”

Section: Seed Fractionmentioning

confidence: 99%

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Analyses of the power generation performance and the non-equilibrium plasma of a disk MHD generator

Le¹

2016

Sci. Tech. Dev. J.

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“…One of these parameters is the electrical conductivity of the air flow, which affects the electrical efficiency, acceleration effect and the input power of the acceleration channel. To enhance the acceleration effect, it is essential to increase the electrical conductivity of the airflow and the electrical efficiency of the channel [18]. Secondly, the energy density of plasma also has a significant impact.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of diverging plasma magneto-hydrodynamic acceleration channels

Wei,

Lu,

Yan

et al. 2023

Phys. Scr.

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This paper presents a numerical study of plasma flow in a magneto-hydrodynamic acceleration channel. The results show that in the channel with equal electrode pair spacing, increasing the magnetic field strength reduces the Joule heat dissipation and the temperature.Increasing the applied voltage increases the external energy input, increasing both the exitMach number and the internal temperature. Reducing the electrical conductivity achieves a balance between acceleration and temperature rise. For acceleration channels of different shapes, a constant cross section channel can only accelerate the fluid to near sonic speeds, whereas a diverging channel can achieve supersonic speeds. In addition, maintaining constant electrode spacing in the diverging channel effectively prevents fluid deceleration at the rear of the acceleration channel caused by the reverse Lorentz force under high magnetic field strength.

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Effects of Cesium Salts on the Electrical Conductivity of the Weakly Ionized Gas in a Hypersonic MHD Channel

Huang

et al. 2023

Int. J. Aeronaut. Space Sci.

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Preliminary Experimental Investigation on MHD Power Generation Using Seeded Supersonic Argon Flow as Working Fluid

Cited by 17 publications

References 11 publications

Analyses of the power generation performance and the non-equilibrium plasma of a disk MHD generator

Analyses of the power generation performance and the non-equilibrium plasma of a disk MHD generator

Numerical simulation of diverging plasma magneto-hydrodynamic acceleration channels

Effects of Cesium Salts on the Electrical Conductivity of the Weakly Ionized Gas in a Hypersonic MHD Channel

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