<論説>熱電発電器の接触熱抵抗の評価と傾斜機能材料を用いた電極構造の検討

概要

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Recently a thermoelectric generator is seriously and widely investigated for the application of electricity generation by use of unused energy. Some research project concerning to the development of high-powered thermoelectric material and suitable conversion systems have been started by institutes of the Japanese Government. Technical problems of the generator construction would be summarized as heat transfer and thermal stress. Heat transfer between heat source and heat medium strongly depends on the condition of heat source. So our research interest concentrated to the transfer around the thermoelectric material. In this paper the contact thermal resistance between a thermoelectric module and a heat transfer tube was investigated. Then it was proved that contact thermal resistance should not be negligible. So the unit which a heat transfer tube, electric insulators and electrodes are combined as functionally gradient material was proposed and evaluated on the view point of the lost electric power and the thermal resistance.
1995-02-28