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Heat Sink
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Heat pipe principle
The heat absorption and heat release of the object are relative. When there is a temperature difference, the phenomenon that heat is transferred from the high temperature to the low temperature is inevitable. Three ways of transferring heat: radiation, convection, conduction, where heat radiation is the fastest. The heat pipe uses the evaporative cooling to make the temperature difference between the two ends of the heat pipe large, so that the heat is quickly transmitted. Generally, the heat pipe is composed of a pipe shell, a liquid absorbing core and an end cover. The inside of the heat pipe is drawn into a negative pressure state and filled with a suitable liquid which has a low boiling point and is easily volatilized. The tube wall has a wick which is composed of a capillary porous material. One section of the heat pipe is the evaporation end, and the other section is the condensation end. When one end of the heat pipe is heated, the liquid in the capillary tube evaporates rapidly, the vapor flows to the other end under a slight pressure difference, and the heat is released, and the liquid is recondensed into a liquid, and the liquid is further porous. The material flows back to the evaporation section by capillary action, so that the heat is transferred from one end of the heat pipe to the other end. This cycle is fast, and heat can be continuously transmitted. The workflow is as follows:
(1) heat is transferred from the heat source through the heat pipe wall and the wick that is filled with the working liquid to the (liquid-vapor) interface;
(2) the liquid evaporates at the (liquid-vapor) interface in the evaporation section;
(3) steam in the steam chamber flows from the evaporation section to the condensation section;
(4) The steam condenses on the vapor/liquid interface in the condensation section:
(5) Heat is transferred from the (vapor-liquid) interface to the cold source through the wick, liquid and pipe wall:
(6) The condensed working liquid is returned to the evaporation section by capillary action in the wick.

Superconducting aluminum temperature plate
Superconducting aluminum uniform temperature plate, which is quickly and evenly distributed to the low temperature condensation by the heat of evaporation of the thermal superconducting medium in the vacuum chamber, and then the capillary structure in the cavity is returned to the heat source, and the evaporation/condensation is repeated in the near-ultrasonic speed. The action removes a lot of heat in a very short time. The technology is similar in principle to a heat pipe, but differs in the way it is conducted. The heat pipe is one-dimensional linear heat conduction, and the heat in the vacuum chamber uniform heat plate is conducted on a two-dimensional surface, so the efficiency is higher.

Superconducting aluminum temperature plate features
1. Fast thermal conductivity, comparable to sound speed
2. The working medium does not freeze, the starting temperature is low, and it can work normally in the environment of -60 °C.
3. Can withstand high heat flux and eliminate system hot spots;
4. There is no dissimilar metal connection, repeated temperature changes will not break the connection
5. Made of aluminum, cost-effective, light weight
6. Suitable for all kinds of narrow spaces, the direction of gravity can be bent at will
7. Contact with the heat source surface to reduce contact thermal resistance, adjust the width and length arbitrarily
8. The structure is obtained through the mold, and the production cost is low.
Superconducting aluminum temperature plate application simulation example






length

width

thickness

Conduction coefficient (w/m.k)

100~3000mm

5~240mm

1~6mm

2000~200000


Superconducting aluminum temperature plate application field
Wanbang all-aluminum uniform temperature plate overcomes the welding sealing process and vacuum injection process of multi-cavity array type uniform temperature plate, which makes the product surpass Haier's requirements in welding seal and isothermal index, and becomes a new product of Haier. The only supplier specified.
Superconducting temperature-average board application areas: solid-state refrigeration conduction, medical cold chain transport box, new solid-state refrigeration refrigerator, air conditioner, IGBT module heat dissipation, large heat flow density chip heat dissipation, PC electronic heat dissipation, communication electronic heat dissipation, LED heat dissipation, etc.






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