CPU of computer is a high density heating element. Based on the cooling principle of
thermoelectric cooler (TEC), the cold end of
TEC is in contact with the display chip and the hot end is in contact with the
heat sink. When connecting a power supply, the temperature difference of the cold and hot end will come out and moves from the cold end to the hot end through lattice energy. Only if the hot end heat can be dissipated effectively, the cold end will be cooling constantly and the cooling effect will be pretty good. In fact, TEC is a heat pump, which can transfer the heat from chips to
heat sinks, so only if the heat of the TEC hot end is being dissipated continually, the cold end can be cooling and the display chips can be in a relatively constant temperature state. However, in the hot end of TEC, the heat sink and fan are still needed. In the process of using TEC, there are some other points to consider.
1 External power supply
When comparing with general air cooling, the power of TEC is very high and it can be up to 36W~40W, so at least the power supply 12V, 3A is needed.
2 Condensation phenomenon
The condensation phenomenon is a killer for TECs. In the high humidity environment, if the temperature is low, the water vapor in the air condenses into droplets on the surface of TEC, which is condensation phenomenon. If the droplets flow to the motherboard or display chip, the consequences will be terrible.
3 TEC size
According to the area of chips, the nearest size should be selected, but not greater than the chip itself.
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