Principle of semiconductor refrigeration chip:
Provided by the DC power supply electron flow of the energy required, the power supply, the electron negative (-) departure, the first pass through the P-type semiconductor, where the absorption of heat, to the N-type semiconductor, and the heat will be discharged, every NP module, there is heat from one side was sent to the other side resulting in a temperature difference between the formation of the hot and cold ends. And the formation of hot and cold ends.
The hot and cold ends are composed of two ceramic plates, and the cold end is connected to the heat source, which is to be cooled. In the past, coolers were applied to CPUs, utilizing the cold side to cool the CPU, while the heat dissipated from the hot side had to be discharged by a fan. The cooler is also used to make a cold/hot insulated box for the car, the cold side can be a cold drink machine, and the hot side can insulate the hot things.
The semiconductor refrigeration chip as a special cold source, in the application of technology has the following advantages and features:
1, does not require any refrigerant, can work continuously, there is no source of contamination no rotating parts, will not produce the rotary effect, there is no sliding parts is a solid piece of work, no vibration, noise, long life, easy to install.
2, semiconductor refrigeration chip has two functions, both cooling and heating, refrigeration efficiency is generally not high, but the heating efficiency is very high, always greater than 1. Therefore, the use of a chip can be replaced by a discrete heating system and refrigeration system.
3, semiconductor refrigeration chip is a current transducer-type chip, through the control of the input current, high precision temperature control can be achieved, coupled with the temperature detection and control means, it is easy to realize the remote control, programmable control, computer control, easy to form an automatic control system.
4, the thermal inertia of the semiconductor refrigeration chip is very small, refrigeration heating time is very fast, in the case of good heat dissipation at the hot end of the cold end of the unloaded, energized in less than a minute, the refrigeration chip will be able to reach the maximum temperature difference.
5, the reverse use of semiconductor refrigeration chip is the temperature difference in power generation, semiconductor refrigeration chip is generally applicable to the low and medium temperature zone power generation.
6, semiconductor refrigeration chip of the individual refrigeration element of the power is very small, but the combination of electric pile, with the same type of electric pile in series, parallel method of combining into a refrigeration system, the power can be made very large, so the refrigeration power can be done to a few milliwatts to tens of thousands of watts of the range.
7, semiconductor refrigeration chip temperature range, from positive temperature 90 ℃ to negative temperature 130 ℃ can be realized.