著者

山口 作太郎

出版者

社団法人 プラズマ・核融合学会

雑誌

プラズマ・核融合学会誌 (ISSN:09187928)

巻号頁・発行日

vol.78, no.1, pp.19-35, 2002 (Released:2005-12-08)

参考文献数

39

被引用文献数

2

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Thermoelectric system has various merits for use in energy conversion because the temperature difference is only required to generate electric power and there are not movable parts in the system. However, thermoelectric system is not so popular in civil use because its energy conversion efficiency is not high in the present time. But if we consider the exergy flow even in a conventional turbine generator, the turbine generator system can not use energy completely, and a symbiotic and/or hybrid system can be applied, which is introduced in the present study. On the other hand, in fusion reactor there are many parts having large temperature difference because plasma temperature is high and superconducting magnets are used. One of the applications for superconducting system is mentioned and is called Peltier current lead. This can reduce heat leak to low-temperature system, and improve the efficiency of the whole system. Recently, material study has progressed, and various kinds of materials are proposed and studied. The magnetic field effect is introduced as investigated by the author's research group. Magnetic field effect was divided into three levels of the categories. One is in the macroscopic level, and this is characterized by the generalized Ohm's equation. The second level is characterized by Boltzmann equation, and in this level we can discuss the macroscopic transport parameters. The third level is the microscopic level and we discuss the band structure to solve the carriers themselves, for example Schrödinger equation. In this paper, our recent activities are mentioned in these fields.

著者

山口 作太郎 浜辺 誠 山本 勇 ファマキンワ トーシン 飯吉 厚夫

出版者

中部大学

雑誌

中部大学工学部紀要 (ISSN:09108629)

巻号頁・発行日

vol.43, pp.45-52, 2007-12

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One of the superconducting (SC) applications is the electric power transmission line, and the alternate current (AC) power transmission lines are developed in many countries as the national projects. On the other hand, direct current (DC) power transmission line has many technical merits to in SC technologies. For example, short circuit current is low, we can neglect the AC loss of the SC power cables and the SC cable cost is low. Therefore, we started to construct an experimental device of the DC SC power transmission line in Chubu University from 2005 by using the high temperature superconductor. In this paper, we describe the experimental device, the first results of the experiment and its future vision of the technology and the relation with the renewable energy sources, such as solar panel and wind firms.