感温性磁性流体を用いた MHD 方式熱エナジーハーベスタ

抄録

This paper proposes a thermal energy harvester of MHD system using a temperature sensitive magnetic fluid (TSMF) which is magnetized by the temperature changes. Heat transport systems using TSMF have already been proposed by several studies, but both heat transport system and thermal energy harvester of MHD system have not been yet developed. The device is a 244 mm length rectangular closed channel of 4 × 5 mm. The operation of this device is carried out by two permanent magnets between the cooling and heating sections. The maximum voltage was about 0.055 mV in this experiment. It was about 80 % of the voltage obtained theoretically. Furthermore, parameters of the thermal characteristics were calculated.