1 The temperature sensor includes thermocouple, thermoelectrical resistance mainly.

2 Due to the special properties of the thermoelectrical effect, Peltier devices can be used for both heating and cooling.

3 The thermoelectrical principle (is open by the French scientist Peltier in 1834) allows to bring to a design of a refrigerator the heat section for hot food!

4 Thermoelectrical modules in comparison with traditional refrigerating machines:-Are durable, -Do not contain dangerous chemical substances -Are simple in management, -Have high reliability.

5 This article is detailed introduce the work frame diagram and principle of the electrical execute machine, as to it is application in the thermoelectrical station.

6 Metal sulfides have shown great potential in the areas of solar cells, thermoelectrical materials and memory devices.