Working principle of semiconductor refrigeration chip
The principle of semiconductor refrigeration chip is the Peltier effect. Let's take a closer look.
1. Peltier effect means that when current passes through the circuit composed of different conductors, in addition to irreversible Joule heat, heat absorption and heat release will occur at the joints of different conductors with different current directions.
2. Semiconductor refrigeration chip is a tool for heat transfer. When there is a current in the thermocouple pair formed by a piece of N-type semiconductor material and a piece of P-type semiconductor material, heat transfer will occur between the two ends, and the heat will be transferred from one end to the other, thus generating a temperature difference to form a cold and hot end.
3. Semiconductor refrigeration chip is a kind of cooling device composed of semiconductors. It appeared around 1960. It has the advantages of high precision, long life, small size, pollution-free, both cooling and heating. It is a real green product. Compared with compressor refrigeration, semiconductor refrigeration chips are more effective and cost-effective.
The above is a brief introduction to the working principle of the semiconductor refrigeration chip.
1. The problem of icing inside the refrigerator may be that many consumers have some wrong methods when using it. For example, the food itself is still steaming, but it is directly put into the refrigerator. Because the internal temperature of the refrigerator is relatively low, when it is cold, water vapor will form, which will cause the problem of icing on the inner wall.
1. Preventive measures can be taken. For example, if the food is still steaming, it can't be put in directly. It can be put in only when it is cold. If you want to preserve fresh vegetables, wash them thoroughly, drain the water, wrap them in plastic bags or wrap them with plastic wrap, and then put them in. This can not only lock the water, but also help the use of the refrigerator, so as to avoid the problem of icing.