In 1834, the French scientist Peltier discovered that when direct current passes through a circuit composed of two different conductive materials, the phenomenon of heat absorption or heat release will be generated on the junction (depending on the direction of the current), this phenomenon is called the Peltier effect, and semiconductor refrigeration is the specific application of the Peltier effect in engineering technology.
Semiconductor refrigeration sheet, also known as thermoelectric refrigeration sheet, is a kind of heat pump, which has the advantage of no sliding parts, and is used in some occasions where space is limited, reliability requirements are high, and there is no refrigerant pollution. It is the Peltier effect that makes use of semiconductor materials. When direct current passes through a galvanic couple formed by two different semiconductor materials in series, heat can be absorbed and emitted at both ends of the galvanic couple, and the purpose of cooling can be realized. It is a refrigeration technology that generates negative thermal resistance, and it is characterized by no moving parts and relatively high reliability.
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.