教学型温差发电演示仪的设计与制作

设计并制作了一种简单的教学型温差发电演示仪。演示仪由水和半导体发电片组成温差发电部分,利用冷水与热水之间的温差发电;由温度表和电压表组成测量部分,研究温差与电势之间的关系;由小风扇、LED和电珠组成效果演示部分。本设计原理简单,结构清晰,演示效果明显。教学实践中也很受学生的喜爱。

Design and Manufacture of Thermoelectric Generation Demonstration Instrument

A thermoelectric generation demonstration instrument is designed.This system consists of three parts： thermoelectric generation,demonstration and measurement.In the first part,thermoelectric power is generated by the system of water and semiconductor thermoelectric materials;in the second part,the relationship of temperature difference and electric potential is measured by voltmeter and thermometer;the last demonstration part composes a fan,some bulds and LEDs.The design features simplicity in principle,clearness in structure and visibility in demonstration and is greatly enjoyed in class.