During the cooling process of
thermoelectric cooler (
TEC), the dissipating effect has direct effect on the cooling performance. The bad performance of heat transfer will cause the temperature rise on hot-side, thus the cooling capacity will reduce a lot.
Under certain current, heat transfer from hot side to cold side can be reduced with the decrease of temperature. Only when the heat on the hot-side is drained away in time to maintain different hot-side temperature, the cold side can continuously cool.
At present, there are many researches on dissipation methods on TEC hot-side. The main dissipation methods include air natural convection, air forced convection cooling, water cooling, heat pipe heat transfer, etc.
1.Air natural convention
Using air national convention, the heat can be dissipated into environment. Because of small power, this method can be used in some small occasions or some occasions with noise restrictions.
2.Air forced convection cooling
Based on natural convection cooling, an axial flow fan is fixed on the end of heat sink.
3.Water cooling
A cold water tank is connected to the hot end of TEC. The water through the cooling water pipe can take the hot-side heat away. This is a very high efficiency cooling method.
4.Heat pipe heat transfer
When comparing with troditional method, in working process, the temperatures on the both sides have little difference on both ends. A long isotherm ribbon comes in to being along with the axis of the heat pipe.
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