The Seeback effect, also known as the first thermoelectric effect, is a thermoelectric phenomenon in which the temperature difference between two different electrical conductors or semiconductors causes a voltage difference between two different substances. In a circuit consisting of two metals, A and B, if the temperature of the two contact points is different, then an electric current will appear in the circuit, which is called a thermal current.
The essence of the Seebeck effect is that when two metals come into contact, there will be a contact potential difference, which depends on the two fundamental factors of the metal's electron work and effective electron density.
Semiconductors have a large thermoelectric electromotive force and can be used as a thermoelectric generator. The main component of semiconductor thermoelectric power generation is the semiconductor thermoelectric power generator, which is composed of many PN junctions connected in series to output voltage components, and a PN junction generates voltage under the condition of temperature difference, and forms a larger voltage in series for use.
Multi-stage semiconductor refrigeration heat pump technology test bench.
QY-ZLR46 multi-stage semiconductor refrigeration heat pump technology test bench adopts water-cooled high-power multi-stage semiconductor refrigeration sheet, which can demonstrate the state of semiconductor refrigeration sheet refrigeration and heat pump, respectively: Peltier effect, Seebeck effect.