实验研究铜铁热电偶的温差与电势

Study on Temperature Difference and Electric Potential of Copper and Iron Thermocouple by the Experimental

在实验教学中让学生理解热电偶的工作原理、并将自己制作的热电偶进行定标,从而加深对温差与电势理论知识的理解。通过常见的铜铁两种不同金属材料可制作实物演示温差电现象。将热学和电学有机地结合在一起,把非电量温度的测量转换为电量的测量。不但直观准确地演示了塞贝克效应和帕尔贴效应,同时也拓展了学生的知识面,满足了学生的好奇心,引导学生关心当代工业发展动态,提高学生对实验课的重新认识。

To let the students understand the working principle of the thermocouple in the experiment, the thermocouple produced by their own is calibrated so as to deepen their understanding of temperature difference and the theoretical knowledge of electric poten- tial. The common two kinds of different metallic materials of copper and iron can produce entity to demonstrate the thermoelectric phe- nomenon. By organically integrating the thermology and the electrology, we can convert the measurement of the non - electric tempera- ture to the measurement of electric quantity. This experiment can not only intuitively and accurately demonstrate the Seebeck effect and Pearl post effect, but also expand the students＇ knowledge, satisfy the curiosity of the students, guide students interested in contempo- rary industrial development, improve the students to re - understanding of experimental class.