Development of temperature‐change sensor by thermoelectric elements and its response evaluation on dropping into water |
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| Authors: | Katsuyuki Tanaka Takuya Yasuno Yukihiro Higashi Shunichi Okuzaki Tatsuo Katakura |
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| Affiliation: | 1. Department of Mechanical Systems and Design Engineering, Iwaki Meisei University, Japan;2. Department of Product Development, Oki Denki Bohsai Co., Ltd., Japan |
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| Abstract: | A temperature‐change sensor by thermoelectric elements that is directly connected to a p‐type element and an n‐type element was developed. A β‐FeSi2 thermoelectric semiconductor made by a spark plasma sintering method was used as a prototype sensor. Evaluation of this thermoelectric temperature‐change sensor was carried out by measuring its electromotive force when it was dropped into a thermostated water bath. It was confirmed that there existed a correlation between the temperature difference and the electromotive force of the sensor, i.e., approximately 5 mV of electromotive force was generated at a temperature difference of 30 K. In addition, the dependence of electromotive force on the size and properties of the thermoelectric elements was evaluated by carrying out FEM analysis. © 2009 Wiley Periodicals, Inc. Heat Trans Asian Res; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/htj.20268 |
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| Keywords: | temperature‐change sensor thermoelectric semiconductor β ‐FeSi2 |
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