The advantages and use of semiconductor chilling plate?
The fan and heat sink are used to heat the hot end of the cooling plate. Usually, the temperature difference between the hot and cold ends of the semiconductor refrigeration sheet can reach 40 to 65 degrees. If the hot end temperature is reduced by active heat dissipation, the cold end temperature will decrease accordingly, so as to reach a lower temperature. The magnitude of heat absorption and release is determined by the magnitude of the current and the logarithm of the component N and P of the semiconductor material. The following three points are the thermoelectric effect of thermoelectric refrigeration.
In addition, it has the advantage of no sliding parts, used in some space constraints, high reliability requirements, no refrigerant contamination.
How are semiconductor chilling plate used in equipment?
The heat dissipation of semiconductor chilling plate is a professional technology, but also the basis of long-term operation of semiconductor chilling plate. Good heat dissipation is a prerequisite for obtaining the lowest cold end temperature.
1.Like the CPU heat sink, the fan is installed in the middle of the heat sink, and the fan draws air outward.
2. Set an air duct on the heat sink.
3.can be water cooled.
As a special cold source, semiconductor refrigeration sheet has the following advantages and characteristics in the technical application:
1.Do not need any refrigerant, can work continuously, no pollution source no rotating parts, will not produce rotary effect, no sliding parts is a kind of solid pieces, no vibration, noise, long life, easy installation.
2.Semiconductor chilling plate has two functions, both refrigeration and heating, refrigeration efficiency is generally not high, but the heating efficiency is very high, always greater than 1. So a single piece can be used instead of a separate heating and cooling system.
3.Semiconductor chilling plate is the current energy exchange type pieces, through the input current control, can achieve high precision temperature control, coupled with temperature detection and control means, it is easy to achieve remote control, program control, computer control, easy to form automatic control system.
4.Semiconductor chilling plate thermal inertia is very small, refrigeration heating time is very fast, in the case of good heat dissipation at the hot end of the cold end no-load, power less than a minute, the refrigeration sheet can reach the maximum temperature difference.
Through the above analysis, the application range of semiconductor thermoelectric pieces are: refrigeration, heating, power generation, refrigeration and heating applications are more common. For example:
1. Military radar, submarines, etc.;
2. Medical care; Cold force, cold closure, cataract extraction tablets, blood analyzer, etc.;
3. Laboratory equipment: cold trap, cold box, cold tank, electronic low temperature test device, all kinds of constant temperature, high and low temperature experiment pieces.
4. Special devices: low temperature tester for petroleum products, low temperature tester for biochemical products, bacterial incubator, constant temperature developing tank, computer, etc.
5. Daily life: air conditioning, hot and cold containers, water dispensers, E-mail, etc.
