3 0 0 0 OA 直流超伝導送電システムの開発と目標 : 中部大学での実験と再生可能エネルギー
- 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
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.
1 0 0 0 IR pH応答性ガラス電極電位に関するEisenman式の矛盾について
At present, Eisenman equation combining a diffusion potential difference in the glass with a phase boundary potential difference in solution-glass interface tends to have been accepted widely as a theoretical equation of pH-sensing glass electrode potential. In this paper, it is clarified that there are a physiochemical mistake of using the concentration instead of the activity to be originally used in the ionic flux equation and a mathematical mistake of applying a definite integral on the discontinuous phase. Potential equation obtained by correcting these mistakes, is the isomorphic one which is similar to the equation reported by Nikolsky, and it does not coincide with the experimental data.
1 0 0 0 IR Jリ-グサッカ-に関する意識調査の分析--Jリ-グ人気について
1 0 0 0 IR 熔解ダストのコンクリート用混和材への適用性
As is known, smelting dust has been reclaimed so far. But, it has the possibility of being used as a recycled material. When it is used as a substitute for cement, the amount of cement can be decreased. However, there is a problem with this; the amount of the hydroxide calcium in the concrete will also be reduced, thereby affecting the strength and the durability of concrete due to neutralization and other influencing factors. This research has clarified the reactivity of smelting dust and hydroxide calcium. First, the change over time of the amount of the hydroxide calcium in the paste was measured. Then, some basic experiments were conducted concerning fresh properties and the coagulation stiffening reaction of the concrete when some percentage of the cement is substituted for smelting dust. We have tried to detect how much the substitution addition rate affects various physical properties of the concrete.